GOST 10994-74. Precision alloys. Grades.

GOST 2771-81
GOST10994-74
Astm B603
TU 14-11-245-88
GOST 10994-74 - precision alloy grades from Evek GmbH supplier

INFORMATION DATA

1. DESIGNED AND APPLIED by the Ministry of Iron and Steel Industry of the USSR

STANDARD DEVELOPERS

E. K. Sizov, S. S. Gratsianova, V. V. Karateeva

2. APPROVED and put into effect by Decree of the USSR State Committee for Standards of 17.01.74 N 147

3. INSTEAD OF GOST 10994-64

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

Designation of the normative technical document referred to
 Paragraph, subparagraph, list, appendix number
GOST 7565-81
 2.6
GOST 10533-86
 Appendix
GOST 12344-2003
 2.6
GOST 12345-2001
 2.6
GOST 12346-78
 2.6
GOST 12347-77
 2.6
GOST 12348-78
 2.6
GOST 12349-83
 2.6
GOST 12350-78
 2.6
GOST 12351-2003
 2.6
GOST 12352-81
 2.6
GOST 12353-78
 2.6
GOST 12354-81
 2.6
GOST 12355-78
 2.6
GOST 12356-81
 2.6
GOST 12357-84
 2.6
GOST 12364-84
 2.6
GOST 17745-90
 2.6
GOST 28473-90
 2.6
GOST 29095-91 2.6

5. Limitation of validity was removed by the Protocol N 7-95 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-95)

6. EDITION with Amendments 1, 2, 3, 4, 5, approved in March 1975, June 1978, September 1978, July 1982, June 1989 (EOS 5-75, 8-78, 10-79, 11-82, 11-89), Amendment (EOS 6-2002)


This standard applies to precision wrought alloys and establishes the requirements to the chemical composition of the alloys.

Precision alloys are highly alloyed alloys with given physical and physical-mechanical properties, which in some cases require narrow limits of elements in the chemical composition, special melting technology and special processing.

1. 1. CLASSIFICATION

1.1 Depending on the basic properties, precision alloys are divided into the following groups:

I - magnetically soft, having high magnetic permeability and low coercive force in weak fields;

II - magnetically hard alloys with a given combination of parameters of the maximum hysteresis loop or hysteresis loop, corresponding to the field of maximum permeability;

III - alloys with given temperature coefficient of linear expansion (TKLR);

IV - alloys with specified elastic properties, possessing high elastic properties in combination with other special properties (higher corrosion resistance, higher strength, low magnetic permeability, specified values of modulus of normal elasticity and temperature coefficient of modulus of elasticity);

V - superconducting alloys, characterized by special electrical properties in the low temperature range;

VI - alloys with high electrical resistance, having the necessary combination of electrical and other properties;

VII - thermo-metals, representing a material consisting of two or more layers of metals or alloys with different temperature coefficients of linear expansion, the difference of which ensures its elastic deformation when the temperature changes.

(changed edition, Revision N 5).

2. GRADES AND CHEMICAL COMPOSITION

2.1 The chemical composition of the alloys shall be as specified in Table 1-7.

Table 1.


I. Alloys with high magnetic permeability (magnetically soft)

Mark
alloy		 Chemical composition, %
Carbon, not more Silicon Manganese Sulfur
 Phosphorus
 Chrome Nickel Molybdenum Cobalt Copper Iron Other elements
not more than
34NKM,
34NKMP
 0,03
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 -
 33,5-35,0
 2,8-3,2
 28,5-30,0
 -
 The rest
 -
35NKHSP.
 0,03
 0,8-1,2
 0,3-0,6
 0,02
 0,02
 1,8-2,2
 35,0-37,0
 -
 27,0-29,0
 -
 Same
 -
40Н
 0,05
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 -
 39,0-41,0
 -
 -
 Not more than 0.2
 "
 -
40NKM, 40NKMP
 0,03
 Not more than 0.30
 0,3-0,6
 0,02
 0,02
 -
 39,3-40,7
 3,8-4,2
 24,5-26,0
 -
 "
 -
45Н
 0,03
 0,15-0,30
 0,6-1,1
 0,02
 0,02
 -
 45,0-46,5
 -
 -
 Not more than 0.2
 "
 -
47NC
 0,03
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 -
 46,0-48,0
 -
 22,5-23,5
 -
 "
 -
50Н,
50NP		 0,03
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 -
 49,0-50,5
 -
 -
 Not more than 0.2
 "
 -
50NHS
 0,03
 1,1-1,4
 0,6-1,1
 0,02
 0,02
 3,8-4,2
 49,5-51,0
 -
 -
 Not more than 0.2
 "
 -
64H (65H)
 0,03 0,15-0,30 0,3-0,6
 0,02 0,02 - 63,0-65,0 - - - " -
68NM, 68NMP 0,03
 Not more than 0,30
 0,4-0,8
 0,02
 0,02
 -
 67,0-69,0
 1,5-2,5
 -
 -
 "
 -
76NHD,
 0,03
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 1,8-2,2
 75,0-76,5
 -
 -
 4,8-5,2
 "
 -
77NMD, 77NMDP
 0,03
 0,10-0,30
 Not more than 1.4
 0,01
 0,02
 -
 75,5-78,0
 3,9-4,5
 -
 4,8-6,0
 "
 -
79NM,
79NMP
 0,03
 0,30-0,50
 0,6-1,1
 0,02
 0,02
 -
 78,5-80,0
 3,8-4,1
 -
 Not more than 0.20 "
 Titanium
not more than
0,15

Aluminum
not more
0,15
79Н3М
 0,03
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 -
 78,5-80,0
 3,0-3,4
 -
 -
 The rest
 -
80NHS
 0,03
 1,1-1,5
 0,6-1,1
 0,02
 0,02
 2,6-3,0
 79,0-81,5
 -
 -
 Not more than 0.20
 "
 Titanium
not more than 0,15
Aluminum not more than 0,15
36KNM
 0,03
 Not more than 0.40
 Not more than 0,5
 0,015
 0,015
 -
 21,5-22,5
 2,8-3,2
 35,5-37,0
 -
 "
 -
83NF
 0,01
 0,50-1,0
 Not more than 0.5
 0,01
 0,01
 Not more than 0.5
 82,5-84,2
 -
 -
 -
 "
 Vanadium 3,8-4,2
81NMA
 0,01
 Not more than 0.1
 Not more than 0.35
 0,01
 0,01
 -
 80,5-81,7
 4,7-5,2
 -
 -
 "
 Titanium 2.5-3.3
27KH
 0,04
 Not more than 0.25
 0,2-0,4
 0,015
 0,015
 0,3-0,6
 Not more than 0.3
 -
 26,5-28,0
 -
 "
 -
49K2F
 0,05
 Not more than 0.30
 Not more than 0.3
 0,02
 0,02
 -
 Not more than 0.5
 -
 48,0-50,0
 -
 "
 Vanadium 1,7-2,1
49KF
 0,05
 Not more than 0.30
 Not more than 0.3
 0,02
 0,02
 -
 Not more than 0.5
 -
 48,0-50,0
 -
 "
 Vanadium 1,3-1,8
49K2FA
 0,03
 Not more than 0,15
 Not more than 0.3
 0,01
 0,01
 -
 Not more than 0.3
 -
 48,0-50,0
 -
 "
 Vanadium 1.7-2.0
16Х
 0,015
 Not more than 0.20
 Not more than 0.3
 0,015
 0,015
 15,5-16,5
 Not more than 0.3
 -
 -
 -
 "
 -


Note. Alloys of 35NKHSP, 40NKMP, 40NKM, 64H, 79N3M, 36KNM grades are not allowed to be used in newly-developed and upgraded equipment from 01.01.91.


Table 2

II Magnetically hard alloys

Mark
alloy		 Chemical composition, %
Carbon
 Silicon
 Manganese
 Sulfur
 Phosphorus Chrome
 Nickel Vanadium
 Cobalt
 Iron
 Other elements
not more than
 not more than
52K10F
 Not more than 0.12
 Not more than 0.50
 Not more than 0.5
 0,02
 0,025
 Not over 0.5
 0,7
 9,8-11,2
 52,0-54,0
 The rest
 -
52K11F
 Not more than 0,12
 Not more than 0,50
 Not more than 0.5
 0,02
 0,025
 Not over 0.5
 0,7
 10,0-11,5
 52,0-54,0
 Same
 -
52K12F
 Not more than 0,12
 Not more than 0,50
 Not more 0,5
 0,02
 0,025
 Not over 0.5
 0,7
 11,6-12,5
 52,0-54,0
 "
 -
52K13F
 Not more than 0,12
 Not more than 0,50
 Not more than 0.5
 0,02
 0,025
 Not over 0.5
 0,7
 12,6-13,5
 52,0-54,0
 "
 -
35KH4F
 Not more than 0,06
 Not more than 0.30
 Not more than 0.4
 0,02
 0,02
 7,5-8,5
 -
 3,5-4,5
 34,3-35,8
 "
 -
35KX6F
 Not more than 0.08
 Not more than 0.30
 Not more than 0.4
 0,02
 0,02
 7,5-8,5
 -
 5,5-6,5
 34,3-35,8
 "
 -
35KH8F
 Not more than 0.09
 Not more than 0.30
 Not more than 0.4
 0,02
 0,02
 7,5-8,5
 -
 7,5-8,5
 34,3-35,8
 "
 -
EX3
 0,90-1,10
 0,17-0,40
 0,2-0,4
 0,02
 0,03
 2,8-3,6
 0,3
 -
 -
 "
 -
EB6
 0,68-0,78
 0,17-0,40
 0,2-0,4
 0,02
 0,03
 0,3-0,5
 0,3
 -
 -
 "
 Tungsten 5,2-6,2
EX5K5
 0,90-1,05
 0,17-0,40
 0,2-0,4
 0,02
 0,03
 5,5-6,5
 0,6
 -
 5,5-6,5
 "
 -
EX9K15M2
 0,90-1,05
 0,17-0,40
 0,2-0,4
 0,02
 0,03
 8,0-10,0
 0,6
 -
 13,5-16,5
 "
 Molybdenum 1.2-1.7


Note. Alloy of EB6 grade is not allowed for use in newly designed and upgraded equipment from 01.01.91.


Table 3


III. Alloys with specified temperature coefficient of linear expansion

Alloy grade Chemical composition, %
Carbon
 Silicon
 Manganese
 Sulfur
 Phosphorus
 Chrome
 Nickel
 Cobalt
 Copper
 Iron Other elements
not more than
 not more than
29NC,
29NK-VI,
29NK-VI-1,
29NK-1
 0,03
 0,30
 Not more than 0.4 0,015
 0,015
 Not more
0,1		 28,5-29,5
 17,0-18,0
 Not more than
0,2		 The rest Aluminum
less than 0,2

Titanium
not more than 0,1
30NKD,
30NKD-VI		 0,05
 0,30
 Not more than 0.4
 0,015
 0,015
 -
 29,5-30,5
 13,0-14,2
 0,3-0,5
 "
 -
32NKD
 0,05
 0,20
 Not more than 0.4
 0,015
 0,015
 -
 31,5-33,0
 3,2- 4,2
 0,6-0,8
 "
 -
32NC-VI
 0,03
 0,30
 Not more than 0.4
 0,015
 0,015
 Not more than 0.10
 31,5-33,0
 3,7-4,7
 -
 "
 -
33NK, 33NK-VI
 0,05
 0,30
 Not more than 0.4
 0,015
 0,015
 -
 32,5-33,5
 16,5-17,5
 -
 "
 -
35NKT
 0,05
 0,50
 Not more than 0.4
 -
 -
 -
 34,0-35,0
 5,0-6,0
 0,2-0,4
 "
 Titanium 2.3-2.8
36H, 36H-VI
 0,05
 0,30
 0,3-0,6
 0,015
 0,015
 Not more than
0,15		 35,0-37,0
 -
 Not more
0,1		 "
 Aluminum not more than 0.1

Vanadium not more than 0.1

Molybdenum not more than 0,1
36NH
 0,05
 0,30
 0,3-0,6
 0,015
 0,015
 0,4-0,6
 35,0-37,0
 -
 Not more than 0.25
 "
 -
38NCD, 38NCD-VI
 0,05
 0,30
 Not more than 0.4
 0,015
 0,015
 -
 37,5-38,5
 4,5-5,5
 4,5-5,5
 "
 -
39Н
 0,05
 0,30
 0,3-0,6
 0,015
 0,015
 -
 38,0-40,0
 -
 Not more than 0.2
 "
 -
42H, 42H-VI
 0,03
 0,30
 Not more than 0.4
 0,015
 0,015
 -
 41,5-43,0
 -
 Not more than 0.1
 "
 -
42NA-VI
 0,03
 0,15
 Not more than 0.05
 0,010
 0,006
 -
 41,5-42,5
 -
 Not more than 0.1
 The rest
 -
47NH
 0,05
 0,30
 0,3-0,6
 0,015
 0,015
 0,7-1,0
 46,0-47,0
 -
 Not more than 0.2
 "
 -
47H3C
 0,05
 0,30
 0,3-0,6
 0,015
 0,015
 3,0-4,0
 46,0-48,0
 -
 Not more than 0.2
 "
 -
47ND, 47ND-VI
 0,05
 0,30
 Not more than 0.4
 0,015
 0,015
 -
 46,0-48,0
 -
 4,5-5,5
 "
 -
47NHR
 0,05
 0,30
 Not more than 0.4
 0,015
 0,015
 4,5-6,0
 46,0-48,0
 -
 -
 "
 Boron not more than 0,02
48NH
 0,05
 0,30
 0,3-0,6
 0,015
 0,015
 0,7-1,0
 48,0-49,5
 -
 Not more than 0.2
 "
 -
52H, 52H-VI
 0,05
 0,20
 Not more than 0.4 0,015
 0,015
 Not more
0,2
 51,5-52,5
 -
 Not more
0,2
 "
 -
58H-VI
 0,03
 0,30
 Not more than 0.5
 0,015
 0,015
 -
 57,5-59,5
 -
 Not more than
0,3
 "
 -


Notes:

1. In alloy grade 29NK, 29NK-VI, 29NK-1, 29NK-VI-1 deviation from the mass fraction of cobalt ± 0,5% is allowed. Mass fraction of silicon in alloy 29NK-VI, 29NK-VI-1 must not be more than 0,28%.

2. 2. By agreement between the parties, alloy grade 36H may be produced with a mass fraction of carbon not exceeding 0.10%.

3. For the alloys of grades 29NK, 29NK-VI the sum of impurities (carbon, chromium, copper, titanium, sulfur, phosphorus, manganese, silicon, aluminum) shall not exceed 1%.

4. The mass fraction of gases in vacuum-melting alloys shall be not more than:

oxygen - 0,008%, nitrogen - 0,01%, hydrogen - 0,001%. Mass fraction of carbon in alloys of special smelting shall be not more than 0,02%.

5. For alloys 42H, 42H-VI, 42Na-VI mass fraction of vanadium, molybdenum, chromium, aluminum shall be not more than 0.1% of each.

6. Alloy grades 39N, 33NK, 33NK-VI, 47N3X are not allowed to use in newly created and upgraded equipment from 01/01/91.

7. By agreement of the manufacturer and the consumer during melting in 40-tons alloy grades 36H and 42H are allowed in the alloys of vanadium, molybdenum, aluminum not more than 0,15% each, chromium not more than 0,2%.

Table 4


IV. Alloys with specified elastic properties

Mark
alloy		 Chemical composition, %
Carbon, not more Crème Manganese Sulfur
 Phosphorus
 Chromium Nickel Molybdenum Titanium Aluminium Cobalt Iron Other elements
not more than
36NCTU
 0,05
 0,3-0,7
 0,8-1,2
 0,02
 0,02
 11,5-13,0
 35,0-37,0
 -
 2,7-3,2
 0,9-1,2
 -
 The rest
rest
 -
36NCHTU5M
 0,05
 0,3-0,7
 0,8-1,2
 0,02
 0,02
 12,5-13,5
 35,0-37,0
 4,0-6,0
 2,7-3,2
 1,0-1,3
 -
 "
 -
36NCHTU8M
 0,05
 0,3-0,7
 0,8-1,2
 0,02
 0,02
 12,0-13,5
 35,0-37,0
 7,5-8,5
 2,7-3,2
 1,0-1,3
 -
 "
 -
42NHTU
 0,05
 0,5-0,8
 0,5-0,8
 0,02
 0,02
 5,3-5,9
 41,5-43,5
 -
 2,4-3,0
 0,5-1,0
 -
 "
 -
42NCHTUA
 0,05
 0,4-0,7
 0,3-0,6
 0,02
 0,02
 5,0-5,6
 41,5-43,5
 -
 2,3-2,9
 0,6-1,0
 -
 "
 -
44NCTU
 0,05
 0,3-0,6
 0,3-0,6
 0,02
 0,02
 5,0-5,6
 43,5-45,5
 -
 2,2-2,7
 0,4-0,8
 -
 "
 -
68NHVKTU, 68NHVKTU-VI
 0,05
 Not more than 0.4
 0.4 not more than 0.4
 0,010
 0,015
 18,0-20,0
 The rest
 -
 2,7-3,2
 1,3-1,8
 5,5-6,7
 Not more than 1.0
 Tungsten 9,0-10,5

0.003 estimated boron

Cerium estimated 0.05

Copper not more than 0.07

Vanadium not more than 0.2

Niobium not more than 0,2
97NL
 0,03
 Not more than 0.2
 Not more than 0.3
 0,01
 0,01
 -
 Base
 -
 -
 Not more than 0.3
 -
 Not more than 0.5
 Beryllium 2.1-2.5

Copper no more than 0.1
17CRNGT
 0,05
 Not more than 0.6
 0,8-1,2
 0,02
 0,02
 16,5-17,5
 6,5-7,5
 -
 0,8-1,2
 Not more than 0.5
 -
 The rest-
rest
 -
40KHNM
 0,07-0,12
 Not more than 0.5
 1,8-2,2
 0,02
 0,02
 19,0-21,0
 15,0-17,0
 6,4-7,4
 -
 -
 39,0-41,0
 "
 -
40KHMWTU
 0,05
 Not more than 0.5
 1,8-2,2
 0,02
 0,02
 11,5-13,0
 18,0-20,0
 3,0-4,0
 1,5-2,0
 0,2-0,5
 39,0-41,0
 "
 Tungsten 6,0-7,0


Note. Alloy grade 36NKhTYu8M is not permitted for use in newly-built and upgraded equipment from 01.01.93.

Table 5


V. Superconducting alloys

Alloy grade Chemical composition, %
Carbon, not more Titanium Niobium Zirconium
 Molybdenum
 Rhenium + iron
 Oxygen
 Nitrogen
no more than
35BT
 0,03
 60,0-64,0
 33,5-36,5
 1,7-4,3
 -
 -
 -
 -
BTC-VD
 0,03
 0,07-0,20
 The rest
 0,2-1,0
 -
 -
 0,005
 0,005
70TM-VD
 0,03
 73,5-76,0
 -
 -
 24,0-26,0
 2,5
 -
 -

Table 6.

VI. Alloys with high electrical resistance

Alloy grade Chemical composition, %
Carbon, not more Cream
ний		 Manganese Sulfur Phosphorus Chromium Nickel Titanium Aluminum Iron Other elements
not more than
X15U5
 0,08
 Not more than 0.7
 Not more than 0.7
 0,015
 0,030
 13,5-15,5
 Not more than 0.6
 0,20-0,60
 4,5-5,5
 The rest
 Calcium estimated 0.1

Cerium estimated 0.1
H80CUD-VI
 0,03
 Not more than 0.35
 Not more than 0.2
 0,008
 0,010
 19,0-20,0
 Base
 -
 3,5-4,0
 Not more than 0.5
 0,9-1,2 copper
X23Y5
 0,05
 Not more than 0.6
 Not more than 0.3
 0,015
 0,020
 21,5-23,5
 Not more than 0.6
 0,15-0,40
 4,6-5,3
 The rest
 Calcium estimated 0.1

Cerium estimated 0.1
X27YU5T
 0,05
 Not more than 0.6
 Not more than
0,3
 0,015
 0,020
 26,0-28,0
 Not more than 0.6
 0,15-0,40
 5,0-5,8
 The rest
 Calcium estimated 0.1

Cerium estimated 0.1

Barium estimated no more than 0.5
CRN70YU-N
 0,10
 Not more than 0.8
 0.8 Not more than 0.3
 0,020
 0,020
 26,0-28,9
 Remainder
 -
 3,0-3,8
 Not more than 1,5
 Barium not more than 0,10

Cerium max 0,03
CRN20YUS
 0,08
 2,0-2,7
 0,3-0,8
 0,020
 0,030
 19,0-21,0
 19,5-21,5
 Not more than 0.20
 1,0-1,5
 The rest
 Zirconium estimated 0.2

Cerium estimated 0.1

Calcium estimated 0,1
CR20N73YUM-VI 0,05 Not more than 0.2 Not more than 0.3 0,010 0,010 19,0-21,0 The rest Not more than 0.05 3,1-3,6 1,5-2,0 Molybdenum 1.3-1.8

Cerium estimated 0.1
CR15NI60-H 0,06 1,0-1,5 Not more than 0.6 0,015 0,020 15,0-18,0 55,0-61,0 Not more than 0.20
 Not more than 0.20
 The rest Zirconium 0,2-0,5
CR15NI60-N-VI 0,06 1,0-1,5 Not more than 0,6 0,015 0,020 15,0-18,0 55,0-61,0 Not more than 0.20 Not more than 0.20 The rest Cerium estimated 0.1

Magnesium estimated 0.1
CR15N60 0,15 0,8-1,5 Not more than 1.5 0,020 0,030 15,0-18,0 55,0-61,0 No more than 0.30 Not more than
0,20
 The rest -
CH20H80-H-VI 0,05 1,0-1,5 Not more than 0.6 0,015 0,020 20,0-23,0 The rest Not more than
0,20
 Not more than 0.20 Not more than 1.0 Cerium estimated 0.1

Magnesium calculated 0,12
CH20H80-H 0,06 1,0-1,5 Not more than 0.6
 0,015 0,020 20,0-23,0 The rest Not more than
0,20
 Not more than 0.20 Not more than 1.0 Zirconium 0,2-0,5
X20H80 0,10 0,9-1,5 0.9-1.5 Not more than 0.7 0,020 0,030 20,0-23,0 The rest Not more than 0.30
 Not more than 0.20 Not more than 1.5 -
CH20H80-VI 0,05 0,4-1,0 Not more than 0.3
 0,010 0,010 20,0-23,0 The rest Not more than 0.05
 Not more than 1.5 Not more than 1.5 -
Н50К10 0,03 Not more than 0,15
 Not more than 0.3
 0,015 0,015 - 50,0-52,0 - - The rest Cobalt 10,0-11,0
X23YU5T 0,05 Not more than 0,5 Not more than 0.3 0,015 0,030 22,0-24,0 Not more than 0.6 0,2-0,5 5,0-5,8 The rest Calcium estimated 0.1

Cerium estimated 0.1


Notes:

1. Alloys of Х15Н60-Н and Х20Н80-Н grades shall be smelted in induction furnaces. Alloys may be smelted in plasma furnaces with ceramic crucible by agreement between the manufacturer and the consumer until 01.01.92.

2. For the alloy grade X20H80 the presence of residual rare earth elements, as well as barium, calcium, magnesium is not a rejection feature. For the alloy of X20H80-VI grade deoxidation by rare-earth elements and zirconium is not allowed.

3. When smelting X15Yu5, X23Yu5, X23Yu5T, X27Yu5T alloys, intended for the production of heating elements, fresh charge materials must be used. It is allowed to use wastes of own grades.

4. In alloys of X15Yu5, X23Yu5T, X27Yu5T grades, mass fraction of zirconium not more than 0,1% is allowed.

5. In alloys of ХН20ЮС grade, the mass fraction of nitrogen shall be not more than 0.15%.

Table 7

VII. Components of thermo-metals

Mark
alloy		 Chemical composition, %
Carbon, not more Silicon
 Manganese
 Sulfur
 Phosphorus
 Chrome
 Nickel
 Copper
 Iron
 Other elements
not more than
19HH
 0,08
 0,2-0,4
 0,3-0,6
 0,02
 0,02
 10,0-12,0
 18,0-20,0
 -
 The rest
 -
20NG
 0,05
 0,15-0,30
 5,5-6,5
 0,02
 0,02
 -
 19,0-21,0
 -
 "
 -
24HX
 0,25-0,35
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 2,0- 3,0
 23,0-25,0
 -
 "
 -
36Н
 0,05
 0,30
 0,3-0,6
 0,02
 0,02
 Not more than 0.15
 35,0-37,0
 -
 "
 -
42Н
 0,03
 0,30
 Not more than 0.4
 0,02
 0,02
 -
 41,5-43,0
 Not more than 0.1
 "
 -
45NH
 0,05
 0,15-0,30
 0,4-0,6
 0,02
 0,02
 5,0-6,5
 44,0-46,0
 -
 "
 -
46HH
 0,05
 Not more than 0.3
 Not more than 0.4
 0,02
 0,02
 -
 45,5-46,5
 -
 "
 -
50Н
 0,03
 0,15-0,30
 0,3-0,6
 0,02
 0,02
 -
 49,0-50,5
 Not more than 0.2
 "
 -
75GND
 0,05
 Not more than 0.5
 Base
 0,02
 0,03
 -
 14,0-16,0
 9,5-11,0
 Not more than 0.8
 -



(Altered edition, Revision N 2, 3, 5).

2.2 The chemical composition of alloys of groups I, II and V is optional if the properties of the alloys meet the requirements of technical documentation for metal products.

The chemical composition of alloys of groups III, IV, VI and VII may be slightly changed in technical documentation for specific metal products to ensure the required properties.

2.3 The mass fraction of impurities regulated by Tables 1-7 (sulfur, phosphorus, chromium, nickel, titanium, aluminum, etc) shall be controlled by the manufacturer periodically, but not less than once a year.

2.4 The name of alloy grades, except for Group VI, consists of letter designations of elements and a two-digit number in front of the letter, indicating the average mass fraction of the element in per cent, entering into the alloy base (except iron).

The name of alloy grades of Group VI consists of the element designation and the numbers following it. Numbers following the letters mean the average mass fraction of an alloying element in whole units.

The chemical elements in the grades are designated by the following letters:B - niobium, C - tungsten, D - manganese, C - copper, K - cobalt, L - beryllium, M - molybdenum, N - nickel, P - boron, S - silicon, T - titanium, U - aluminum, X - chromium, F - vanadium.

The letter "A" at the end of the grade designates that the alloy is made with a narrowed chemical composition limits, the number 1 in the grades 29NK-1 and 29NK-VI-1 designates the narrowed standard TKLR limits.

The letter E in the grade names denotes a magnetically hard alloy.

The sign "-" in the tables means that the mass fraction of an element is not regulated.

When using special melting methods or their combinations: vacuum-induction, electron-beam, plasma, electroslag and vacuum-arc remelting alloys are additionally marked with a dash, respectively: VI, EL, P, SH, VD and their chemical composition shall correspond to the norms of Tables 1-7, unless other content of elements is stipulated in the technical documentation for metal products.

2.3, 2.4 (Altered edition, Revision N 5).

2.5 The approximate purpose and the basic technical characteristics of the alloys are given in the appendix.

2.6 Chemical composition of alloys determined on one sample from the melting of GOST 12344 GOST12357, GOST 12364, GOST 28473 GO ST 29095 or other methods that ensure the necessary accuracy. Sampling - according to GOST 7565. Gas content is determined in accordance with GOST 17745.

(Introduced additionally, Amendment N 5).

APPENDIX (recommended). Approximate designation of the alloys and their main specifications.

ANNEX
Recommended


Table 1*

_______________
* Table 2. (Removed, Revision N 2).

Approximate purpose of alloys and main technical characteristics

Mark of the alloy
 Basic Technical Characteristics
 Approximate application
I. Alloys with high magnetic permeability (magnetically soft)
45H, 50H
 Alloys with high magnetic permeability having the highest value of saturation induction of the whole group of nickel-iron alloys, not less than 1.5 T
 For cores of interchamber and small-sized power transformers, chokes, relays and parts of magnetic circuits operating at increased inductions without or with a slight demagnetizing
50NHS
 Alloy with increased magnetic permeability and high resistivity at induction not less than 1.0 T
 For cores of pulse transformers and audio and high frequency communication equipment operating without or with a small amount of magnetization, for cores of magnetic heads
40Н
 Alloy with increased magnetic permeability and saturation induction
 For cores of car ignition interference suppression wires
50NP
 Alloy grade 50H with crystallographic texture and rectangular hysteresis loop
 For cores of magnetic amplifiers, commutating chokes, rectifier units, elements of calculating devices of counting and decoding machines
34NCMP, 35NCXSP, 40NCMP, 68NMP
 Alloys of 34NKM, 35NKÕS, 40NKM and 68NM with magnetic texture and rectangular hysteresis loop, high magnetic permeability and saturation induction not less than 1,2-1,5 T
 For cores of magnetic amplifiers, commutating chokes, rectifier units, elements of calculating devices of counting and decoding machines
76NHD, 79NM, 80NHS, 77NMD
 Alloys with high magnetic permeability in weak fields at saturation induction of 0,65-0,75 T
 For cores of small size transformers, chokes and relays operating in the weak fields of magnetic screens. In small thicknesses (0.05-0.02 mm) - for cores of pulse transformers, magnetic amplifiers and proximity relays; grade 80NHS - for cores of magnetic heads
68NM, 79N3M
 Alloys with high permeability and induction increments under unipolar pulse magnetization with magnetic texture
 For cores of pulse and broadband transformers
47NC, 64N, 40NCM
 Alloys with low residual induction and constant permeability in a wide range of fields, with magnetic texture
 For cores of constant inductance coils, filter chokes, broadband transformers
16Х
 Alloy with high induction in weak and medium fields and low coercive force; with corrosion resistance in a range of acidic and aggressive environments
 For magnetic cores of various control systems of armatures and electromagnets; parts of electrical machines without protective coatings, operating in harsh environment, temperature and pressure conditions.
36KNM
 Alloy with high induction in weak and medium fields and low coercive force; with high corrosion resistance in seawater
 For magnetic cores in seawater
83NF
 Alloy with the highest initial permeability in direct and alternating fields
 For small transformer cores and chokes operating in weak fields. For magnetic screens
27KX
 Alloy with high induction from 24 kgf in medium and strong fields, high Curie point of 950 °C and improved mechanical properties
 For rotors and stators of electrical machines and other magnetic circuits at normal and high temperatures and under mechanical stress
49K2F
 Alloy with high magnetic saturation, high and constant permeability, high magnetostriction and high Curie point
 For ultrasonic transducer packages of telephone membranes
49KF
 Alloy with a magnetic saturation of at least 2.35 T, high Curie point of 950°C and high magnetostriction
 For cores and pole tips, magnets and solenoids
49K2FA
 Alloy with a magnetic saturation of at least 2.35 T, a high Curie point of 950°C and high magnetostriction
 For transformers, magnetic amplifiers, rotors and stators of electrical machines
79NMP, 77NMDP
 Alloys with high rectangularity of the hysteresis loop and low coefficient of remagnetization
 For small tape magnetic cores, switching devices, logic elements, shift registers, trigger systems
81NMA

Alloy with the highest value of magnetic permeability in weak permanent and alternating magnetic fields with a lower sensitivity to mechanical influences and increased strength. Depending on the final heat treatment ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)can range from 640 N/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(65 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)) to 1270 N/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(130 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For cores of magnetic heads, small transformers, chokes, relays, flaw detectors, magnetic screens, ferroprobes for high sensitivity radioelectronic applications
Note. Alloys of 76NCD, 77NMD and 79NM grades show insignificant change of properties in the temperature range after heat treatment with delayed cooling from 600 °C.

II. Magnetically hard alloys
52K10F, 52K11F,
52K12F, 52K13F

Alloys with magnetic energy of (16-24) 10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)TA/m.

Depending on vanadium content and tempering temperature the necessary ratio of coercive force and residual induction in the range of (4.8-32)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)A/m and 1.2-0.65 T can be obtained. Alloys acquire magnetic properties after cold deformation of 70-90% and subsequent tempering.

 For small-size permanent magnets. Alloys of 52K10F and 52K11F grades, in addition, for the active part of hysteresis motors

Alloys are anisotropic. Alloy wire of 52K13F grade after special thermomechanical treatment possesses coercive force (32-40)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)A/m at induction of 0,80-1,0 T
35KH4F, 35KH6F,
35KH8F
 Alloys with the given parameters of private (in the field of maximum permeability) hysteresis loop. Gain their magnetic properties after cold deformation and tempering. Alloys of 35KX4F, 35KX6F and 35KX8F grades are anisotropic, but can be made with reduced anisotropy.
 For the active part of hysteresis motors
ЕХ3, ЕХ6, ЕХ5К5, ЕХ9К15М2
 Alloyed hard magnetic steels with a coercive force of 5 to 12 kA/m and a residual induction of 0.8 to 1.0 T
 For permanent magnets for non-responsible applications
III. Alloys with specified temperature coefficient of linear expansion (TKLR)
36H, 36H-VI

Alloy with a minimum TKHR of 1.5ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 60 to plus 100 °С

 For parts of devices requiring dimensional stability within the temperature range
32NKD

Alloy in hardened state with a minimum TKLR of 1.0ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 60 to plus 100 °C

 For parts of very high precision instruments requiring dimensional stability in the temperature range
29NK, 29NK-VI,
29NK-1, 29NK-VI-1

Alloy with TKHR (4,5-6,5)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 420 °С

 For vacuum-tight junctions of radioelectronic components with C49-1, C52-1, C48-1, C47-1 glasses
Alloys 29NK-1 and 29NK-VI-1 are characterized by the narrowed TKHR values as compared to 29NK and 29NK-VI alloys.
30NCD, 30NCD-VI

Alloy with the TKHR (3.3-4.6)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 60 to plus 400 °С

 For vacuum tight junctions with C38-1 refractory glass and for certain types of junctions with C40-1 glass
38NCD, 38NCD-VI.

Alloy with TKHR (7,0-7,8)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 60 to plus 400 °С

 For vacuum tight junctions with glass P-6, C72-4, with sapphire
47HX

Alloy with TKHR (8,0-9,0)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 450 °С

 For vacuum-tight junctions with 16Sh, C72-4 , etc. thermometric glass
48NH

Alloy with TKHR (8,5-9,5)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 450 °С

 For vacuum-tight junctions with 16Sh, C72-4 , etc.
47H3X

Alloy with TKHR (9,5-10,5)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 400 °С

 For vacuum-tight connections with thin films of soft glass "Lenzos" etc .
33NK, 33NK-VI

Alloy with TKHR (6-9)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 470 °С

 For joints with ceramic, mica and glass C72-4
47ND, 47ND-VI

Alloy with TKHR (9.0-11.0)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 440 °C, with high permeability and saturation induction 1.4 T

 For soldering with soft glass C93-4, C93-2, C95-2, C94-1, C90-1, C90-2 , etc., for joining with ceramic and mica for springs of hermetic contacts
47HCR

Alloy with TKHR (8,5-11,0)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 330 °С

 For vacuum junctions of radioelectronic components with glass C90-1, C93-2, C93-4, C94-1, C95-2 , etc.
42N, 42NA-VI, 42N-VI

Alloy with TKHR (4.5-5.5)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 340 °С

 In electrovacuum equipment
18KHTF, 18KHMTF

Alloy with TKHR (11-11,4)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)within the temperature range of minus 70 °С to plus 550 °С

 For vacuum-tight connections with glass C90-1, C93-4, C95-2 and sealed contacts
52Н,
52H-VI

Alloy with TKHR (1.0-11.5)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from minus 70 to plus 550 °C, with high permeability and saturation induction 1.5 T

 For bonding with soft glass C90-1, C90-2, C93-2, C94-1, C95-2 and C93-4
58H-VI

Alloy with TKLR (11.5±0.3)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from plus 20 to plus 100 °C and high dimensional stability

 For bar gauges
35NKT

Dispersion-hardening alloy with a TKLR of no more than 3.5ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from plus 20 to plus 60 °C and from plus 20 to minus 60 °C with a time resistance of at least 105 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)

 For parts of equipment working at increased loads
32NK-VI

Annealed alloy with a minimum TKHR of no more than 1.5ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)between plus 20 and plus 100°C and plus 20 to minus 60°C

 For products with polished surfaces, complex shaped parts that cannot be hardened to obtain a lower TKHR
39Н

Alloy with TKHR 4ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from plus 20 to minus 258 °C

 For structures and pipelines operating at low temperatures
36NX

Alloy with TKHR (1,0-2,0)ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)in the temperature range from plus 20 to plus 100 °C and from plus 20 to minus 258 °C

 For structures and pipelines operating at low temperatures
IV. Alloys with specified elastic properties
40KHNM

Alloy with wire tensile strength 2450-2650 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(250-270 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with modulus of normal elasticity 196000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(20000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), non-magnetic corrosion-resistant in aggressive media and in tropical climate conditions, strain-hardening

 For factory watch springs, coil springs at up to 400°C, for cores in electrical measuring instruments, for parts in surgery
40KHMWTU

Non-magnetic corrosion-resistant strain-hardening alloy with wire tensile strength 1960-2160 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(200-220 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with modulus of normal elasticity 216000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(22000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For watch winding springs
36NCTU

Non-magnetic corrosion-resistant dispersion-hardening alloy with a time resistance of 1180-1570 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(120-160 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with a modulus of normal elasticity of 186500-196000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(19000-20000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For elastic sensitive elements of devices and parts operating at temperature up to 250°C
36NKHTU5M

Non-magnetic corrosion-resistant dispersion-hardening alloy with time resistance 1375-1765 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(140-180 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with modulus of normal elasticity 196000-206000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(20000-21000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For elastic sensitive elements operating at temperatures up to 350°C
36NKHTU8M

Non-magnetic corrosion-resistant dispersion-hardening alloy with time resistance 1375-1960 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(140-200 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with modulus of normal elasticity 196000-216000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(20000-22000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For elastic sensitive elements operating at temperatures up to 400°C
68NKHVKTU

Non-magnetic corrosion-resistant dispersion-hardening alloy with time resistance 1375-1570 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(140-160 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with modulus of normal elasticity 196000-216000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(20000-22000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For elastic sensitive elements and instrument parts operating at temperatures from minus 196 to plus 500 °С
17KHNNGT

Corrosion-resistant alloy in all climatic conditions and some aggressive environments, dispersion-hardening, with tensile strength 1470-1720 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(150-175 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), with normal elastic modulus 196000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(20000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For elastic sensitive elements and spring parts of general and special purposes, working at temperatures up to 250 °С
97NL

Dispersion-hardening corrosion-resistant alloy with a tensile strength of 1570-1865 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(160-190 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)), withmodulus of normal elasticity 196000-206000 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(20000-21000 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)) and low specific electrical resistance 0.35 Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For current-carrying and power elastic sensitive elements operating at temperatures up to 300°C
42NKHTU

Dispersion-hardening alloy with a low temperature coefficient of elastic modulus up to 100 °C (20-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)1/°C) with a time resistance of 1180-1570 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(120-160 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For elastic sensing elements operating at temperatures up to 100 °C
42NKHTUA

Dispersion-hardening alloy with a minimum temperature coefficient of modulus of elasticity ensuring a temperature error of hair spirals of the watch (in the balance-hair system) of less than 0,3 s/°C-d, with a time resistance of 1080-1375 MN/mГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(110-140 kgf/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5))

 For hair spirals of clock movements
44NCTU

Dispersion-hardening alloy with a low temperature coefficient of elastic modulus up to 180-200 °C (15-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)1/°C)

 For elastic sensing elements operating at temperatures up to 200°C
V. Superconducting alloys
35BT

Critical current density in transverse magnetic field 3.2-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)A/m at 4.2 K ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)(3-6)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)A/cmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5). Deforms well, can be used to make thin wire, ribbon, superconducting composites with a large number of cores (up to 361)

 For superconducting magnetic field screens, for conductors of superconducting magnetic systems
BTC-VD

Critical current per unit width of cold-rolled tape with thickness of 20 microns and width of 90-100 mm not lower than (8,5-9,0)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)A/m, superconducting transition temperature 8,5-9,0 K, temporary tensile strength 100-110 N/mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)

 For superconducting topological switch generators in superconducting magnet energy input and output systems; cryogenic structures
70TM-VD.
 The alloy has a narrow superconducting transition at 4.5 K, width not more than 0.2 K, upper critical field, (0.2±0.02) Tesla, high specific electrical resistance 1.0 μOhmK m, weakly changing with temperature (its relative change from -16 to +24 K does not exceed 30%). It is made in the form of wire with diameter of 0.25-0.35 mm in copper sheath.
 For temperature sensors, liquid helium level gauges
VI. High electrical resistance alloys
X15YU5,
Х23-5
 Alloys are heat-resistant in oxidizing atmosphere containing sulfur and sulfur compounds, work in contact with high-alumina ceramics, prone to sagging at elevated temperatures, cannot withstand sharp dynamic loads. Alloy Kh15Yu5 is a substitute of Kh13Yu4 alloy.
 For resistive elements and for electric heating devices
X23YU5T,
X27YU5T
 Alloys are heat-resistant in oxidizing atmosphere containing sulfur and sulfur compounds, carbon, hydrogen, vacuum, work in contact with high-alumina ceramics, are not prone to the ulcer corrosion, are prone to sagging at high temperatures, cannot withstand abrupt dynamic loads
 For heating elements with a working temperature limit of 1400 °C (X23U5T), 1350 °C (X27U5T) in industrial and laboratory furnaces. X23Yu5T alloy is also used for domestic appliances and electrical heat acting apparatuses.
X15N60-N-VI, X15N60-N, X20N80-N-VI, X20N80-N
 Alloys are heat-resistant in an oxidizing atmosphere, in nitrogen, ammonia, unstable in an atmosphere containing sulfur and sulfur compounds, more heat-resistant than ferrochrome aluminum alloys
 For heating elements with a limit working temperature of 1100 °C (C15N60-N), 1150 °C (C15N60-N-VI), 1200 °C (C20N80-N), 1220 °C (C20N80-N-VI) of industrial electric furnaces and various electric heating devices. Alloys Kh15N60-N-VI and Kh20N80-N-VI are recommended for high reliability heaters of electro thermal equipment.
CRN70-N
 Alloy is heat-resistant in the oxidizing atmosphere, hydrogen, nitrogen-hydrogen mixtures, vacuum; more heat-resistant than ferrochromium alloys.
 For heaters with a working temperature of 1200°C in industrial electric furnaces
CRN20YUS
 The alloy is heat-resistant in an oxidizing environment and in a vacuum. More heat resistant than ferrochromium alloys
 For heaters with a working temperature of 1100°C in industrial electric furnaces and various electric heating devices
Alloys with a specified temperature coefficient of electrical resistance
H50K10

The alloy has a high temperature coefficient of electrical resistance of up to 5.5-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)1/°C in the temperature range from plus 20 to plus 500 °С

 For temperature sensors and temperature-sensitive elements operating in the temperature range from 20 to 500 °C
CH20N80-VI, CH20N80,
CR15N60

Alloys after special heat treatment have temperature coefficient of electrical resistance in the temperature range from minus 60 to plus 100 °C about 0,9-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)°СГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)and 1,5-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)°СГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)respectively

 For production of critical parts of intra-vacuum devices, connectors in electronic equipment, for non-destructive resistors
CH20N73YUM-VI, N80HYUD-VI
 Alloy with low temperature coefficient of resistance and high specific electrical resistance
 For precision resistors (alloy Kh20H73YUM-VI for high stability resistors) and strain gauges



(Altered edition, Revision N 5).

Table 3

Thermo-metal grade*
 Mark of thermomimetal constituents**
 Main characteristic
 Approximate application
VII. Thermomimetals
TB200/113 (TB2013)
 75GND
36Н

Thermo-metal with high coefficient of sensitivity (30-36)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with high specific electrical resistance (1.08-1.18) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature-sensitive components of devices (thermal relays, fuses, thermometers , etc.)
TB160/122 (TB1613)
 75GND
45NH

Thermo-metal with high coefficient of sensitivity (23-28)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with high specific electrical resistance (1,18-1,27) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature-sensitive elements of devices heated by electric current (circuit breakers, relays , etc.)
TB148/79 (TB1523) 20NG
36Н

Thermo-metal with increased sensitivity coefficient (21-25)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with increased specific electrical resistance (0,77-0,82) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature sensitive elements of devices (compensators of protection relays etc .)
TB138/80 (TB1423) 24HX
36Н

Thermo-metal with increased sensitivity coefficient (20-24)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with increased electrical resistivity (0,77-0,84) Oh-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature sensitive elements of devices (relay regulators, impulse sensors, fuses etc .).
TB129/79
(TB1323)		 19NH
36Н

Thermo-metal with higher coefficient of sensitivity (18,5-22,5)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with increased specific electrical resistance (0,76-0,83) Oh-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature sensitive elements of devices (relay regulators, impulse sensors, fuses etc .)
TB107/71
(TB1132)		 24NH
42Н

Thermo-metal with an average coefficient of sensitivity of (16-19)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with an average specific electrical resistance of (0.68-0.74) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 The same
TB103/70
(TB1032)		 19NH
42Н

Thermo-metal with average coefficient of sensitivity (15,5-18,5)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with average specific electrical resistance (0,67-0,73) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature sensitive elements of devices (circuit breakers, relays , etc.)
TB73/57
(TB0831)		 24NH
50Н

Thermo-metal with lowered sensitivity coefficient (10-13)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with average specific resistance (0,55-0,60) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For thermosensitive elements with small bending
TB103/70 (TB1032) 19HX
42Н

Thermo-metal with an average coefficient of sensitivity (15,5-18,5)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with an average specific electrical resistance (0,67-0,73) Oh-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature sensitive elements of devices (circuit breakers, relays , etc.)
TB73/57
(TB0831)		 24NH
50Н

Thermo-metal with lowered sensitivity coefficient (10-13)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with average specific resistance (0,55-0,60) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For thermosensitive elements with small bending
TB95/62
(TB1031, TB68)
 20NG
46Н

Thermo-metal with an average coefficient of sensitivity (15-18)-10ГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)degreesГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5), with an average specific electrical resistance (0,60-0,66) Ohm-mmГОСТ 10994-74 Сплавы прецизионные. Марки (с Изменениями N 1-5)/m

 For temperature-sensitive components of devices (relays, fuses , etc.)

_______________
* The designation of thermo-metal grades is according to GOST 10533.
** Numerator shows active layer, denominator - passive layer.


(Altered edition, Revision N 2, 5).



Electronic text of the document
Electronic text of the document was prepared by ZAO Kodeks and verified by:
official edition.
High-quality and high-grade steel.
Sections and shapes and
calibrated steel. Part 2: Collection of State Standards. -
Moscow: IPK Publishing house of standards, 2004.