Alloy 1201

Designation

Name	The value
Designation GOST Cyrillic	1201
Designation GOST Latin	1201
Transliteration	1201
By chemical elements	1201

Description

Alloy 1201 is used: for the manufacture of welded products operating operating at temperatures down to -253 °C; welded structures operating at cryogenic and elevated temperatures.

Note

Termouprochnennyh alloy. Strengthening effect opened in 1938.
ISO 209−1 alloy brand 1201 is designated АlCu6Mn and 2219.

Standards

Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 4784-97, OST 1 90048-90
Sheets and strips	В53	OST 1 90271-78, OST 1 90272-78, OST 1 90290-80, TU 1-2-453-83, TU 1-2-458-84
Processing of metals by pressure. Forgings	В03	OST 1 90299-81
Tubes of non-ferrous metals and alloys	В64	OST 1 92048-90, TU 1-2-449-83, TU 1-2-478-85
Bars and shapes	В52	OST 1 92093-83, OST 1 90287-87
Bars	В55	TU 1-2-306-74

Chemical composition

Standard	Mn	Si	Fe	Cu	Al	V	Ti	Zn	Zr	Mg
OST 1 90287-87	0.2-0.4	≤0.2	≤0.3	5.8-6.8	Rest	0.05-0.15	0.02-0.1	≤0.1	0.1-0.25	≤0.02
GOST 4784-97	0.2-0.4	≤0.2	≤0.3	5.8-6.8	Rest	0.05-0.15	0.02-0.1	≤0.1	0.1-0.25	≤0.02

Al is the base.
According to GOST 4784-97, the mass fraction of each other impurity (not regulated) is ≤ 0.05%, the total mass fraction of other impurities is ≤ 0.15%.
According to OST 1 90048-90 the total mass fraction of other impurities is ≤ 0.15%.
According to OST 1 90271-78, OST 1 90272-78, OST 1 90287-87, the hydrogen content in the alloy should not exceed 0.20 cm ³ per 100 g of metal.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₁₀
Steel hot-rolled sheet according to OST 1 90271-78. In the delivery condition specifies the condition of the material / condition of the test specimen (longitudinal or transverse)
1-3.5	≥110	≤215	-	≥12
3.5-5	≥120	≤215	-	≥12
5-10.5	≥135	≤215	-	≥12
1-1.9	≥221	≥334	-	≥7
1-1.9	≥280	≥378	-	≥7
6-10.5	≥365	≥490	-
1-1.9	≥280	≥378	-	≥7
6-10.5	≥365	≥490	-
Plate hot rolled for OST 1 90272-78. In the delivery condition specifies the condition of the material / condition of the test samples (in altitude direction, from the middle part of the plate)
40-60	≥295	≥385	≥3	-
60-90	≥295	≥385	≥2	-
40-60	≥295	≥385	≥3	-
60-90	≥295	≥385	≥2	-
Plate hot rolled for OST 1 90272-78. In the delivery condition specifies the condition of the material / condition of the test specimen (longitudinal or transverse, from the middle part of the plate)
11-90	≥110	≤215	≥12	-
11-25	≥345	≥440	≥5	-
11-25	≥345	≥440	≥5	-
11-90	≥235	≥355	≥6	-
11-20	≥365	≥500		-
11-55	≥315	≥420	≥6	-
20-55	≥375	≥505		-
55-75	≥310	≥420	≥6	-
75-90	≥300	≥410	≥5	-
11-20	≥365	≥500		-
11-55	≥315	≥420	≥6	-
20-55	≥375	≥505		-
55-75	≥310	≥420	≥6	-
75-90	≥300	≥410	≥5	-
Extruded OST 1 90287-87. In the delivery condition specifies the condition of the material / condition of test specimens (longitudinal); in cross section - flange thickness, mm
	≥315	≥440	≥6	-
	≥245	≥370	≥6	-
	≤135	≤235	≥12	-
	≥375	≥490	≥6	-
	≥175	≥285	≥14	-
	≥284	≥382	≥5	-
≤30; ≥100	≥295	≥390	≥6	-
30-100	≥300	≥405	≥6	-

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
d₁₀	Elongation after rupture

Physical characteristics

Temperature	r, kg/m³
20	2850

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Technological properties

Name	The value
Weldability	Without restrictions.
Particularities of production of goods	Sheets OST 1 90271-78, plate OST 1 90272-78 are delivered: the method of manufacture with normal plating - A (1201А); material condition: annealed - M (1201АМ), tempered - T (1201АТ) Board with an average degree of deformation of 1,5-3,0 %, tempered and artificially aged T1 (1201АТ1) - the Board, after quenching with an average degree of deformation of 1,5-3,0 %, cold-worked after quenching with an average uplift of 7-10 % - TN (1201АТН), cold-worked after quenching with an average uplift of 7-10 % and artificially aged Т1Н (1201АТ1Н). Accuracy of manufacturing according to the thickness and quality of surface finish - ordinary finish, without the additional symbols according to GOST 21631. Extruded cross-sections up to 500 cm2 in OST 1 90287-87 come: without heat treatment (1201), annealed - M (1201М), hardened and the Board - T (1201Т), hardened, artificially aged, and the Board - T1 (1201Т1).