Steel 03KH18N10T (03Х18Н10; 18CR10NITI)

Designation

Name	The value
Designation GOST Cyrillic	03Х18Н10Т
Designation GOST Latin	03X18H10T
Transliteration	03H18N10T
By chemical elements	03Cr18Н10Ti

Name	The value
Designation GOST Cyrillic	03Х18Н10
Designation GOST Latin	03X18H10
Transliteration	03H18N10
By chemical elements	03Cr18Н10

Name	The value
Designation GOST Cyrillic	Х18Н10Т
Designation GOST Latin	X18H10T
Transliteration	H18N10T
By chemical elements	Cr18Н10Ti

Description

03KH18N10T steel is used: for the manufacture of thin-sheet cold-rolled steel; bellows-expansion joints; parts and welded structures operating in environments of increased aggressiveness (nitric acid, nitrate environments, acetic acid, alkaline solutions and salts); cold-rolled strip intended for deep drawing products, electronic industry; the wire woven grids with square cells of micron size, used for control and separation of materials by particle size, filtration of liquids, gases and other purposes.

Note

Steel corrosion and heat-resistant austenitic class.

Standards

Name	Code	Standards
Steel pipes and fittings to them	В62	GOST 11068-81, TU 14-159-165-87, TU 14-3-219-89
Classification, nomenclature and General rules	В30	GOST 5632-72
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-3935-85
Wire, steel, alloy	В73	TU 14-1-1702-76
Tape	В34	TU 14-1-3502-82
Sheets and strips	В33	TU 14-1-3874-84, TU 14-1-4353-87
Bars and shapes	В32	TU 14-11-245-88
Mesh metal	В76	TU 14-4-1569-89, TU 14-4-432-73, TU 14-4-742-76

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	Al	V	Ti	Mo	W	Ce	O	Co
TU 14-1-3935-85	≤0.03	≤0.02	≤0.035	1-2	17-19	≤0.8	10-11	Rest	-	≤0.05	-	-	-	-	-	-	-	≤0.02
TU 14-3-219-89	≤0.03	≤0.015	≤0.02	0.5-2	17-19	≤0.8	10-11	Rest	-	≤0.05	-	-	≤0.4	-	-	-	-	≤0.02
TU 14-1-3874-84	≤0.03	≤0.025	≤0.035	1.2-2	17-18.5	≤0.8	9.5-11	Rest	≤0.3	-	-	≤0.2	-	≤0.3	≤0.2	-	-	-
TU 14-1-1702-76	≤0.03	≤0.02	≤0.035	≤2	17-19	≤0.8	9-11	Rest	-	-	-	-	≤0.3	-	-	-	-	-
TU 14-1-4353-87	≤0.03	≤0.01	≤0.035	1.2-2	17-19	≤0.6	9.5-11	Rest	≤0.2	≤0.03	≤0.1	-	≤0.005	-	-	0.01-0.1	≤0.006	-
GOST 5632-72	≤0.03	≤0.02	≤0.035	1-2	17-18.5	≤0.8	9.5-11	Rest	≤0.3	-	-	≤0.2	-	≤0.3	≤0.2	-	-	-

Fe is the basis.
According to GOST 5632-72 and TU 14-1-3874-84, the content of Ti% = 5C% is 0.4%.
According to TU 14-1-3874-84, the chemical composition is given for steel 03Х18Н10Т-ВИ. By agreement between the consumer and the supplier, the steel is treated with synthetic slag (it is calculated by calculation of silicocalcals and cerium (misch metal) in an amount of 0.05-0.20% and 0.01-0.10%, respectively, which is not determined by chemical analysis). The residual content of aluminum in steel is not more than 0.10%. The ratio of chromium to nickel is not more than 1.8.
According to TU 14-1-1702-76, the chemical composition is given for steel grade 03H18N10T-VI. The content of Ti% = 5C% is 0.3%.
According to TU 14-3-219-89, the chemical composition is given for steel grades 03X18H10T-VD and 03X18N10T-III.
According to TU 14-1-3935-85 the chemical composition is given for steel 03H18N10T. The content of Ti% = 5C% is 0.40%. Metal processing is allowed up to 0.10% of the sum of the REM by calculation. In the steel of electroslag and vacuum-arc remelting, manganese is allowed up to 0.50%, and the mass fraction of sulfur should not be more than 0.015%, phosphorus - not more than 0.020%. Mass fraction of residual elements - in accordance with GOST 5632.
According to TU 14-1-4353-87 the chemical composition is given for steel 03H18N10-VI. In steel, cerium (misch metal) is introduced in the calculations in amounts of 0.010-0.10%, the content of which is not determined by chemical analysis. The ratio of the amount of chromium to the amount of nickel in the steel should not be more than 1.8. Mass fraction of residual elements - according to GOST 5632.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d
Sheet cold rolled steel in the delivery state on the other 14-1-3874-84
0.3-0.4	≤285	510-640	≥50	-
Tubular billet on the other 14-1-3935-85. The longitudinal samples. Annealing in air or in water 1050-1100 °C
20-25	≥186	≥490	≥40	-
Wire in the delivery state on the other 14-1-1702-76. In the graph δ δ100 specified
0.03-0.055	-	589-981	-	≥20
Tubular billet on the other 14-1-3935-85. The longitudinal samples. Annealing in air or in water 1050-1100 °C
20-25	≥137	≥333	≥25	-
Wire in the delivery state on the other 14-1-1702-76. In the graph δ δ100 specified
0.064-0.09	-	589-932	-	≥20
0.1-0.3	-	589-883	-	≥25

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
d	Elongation after rupture

Technological properties

Name	The value
Pressure treatment	Steel 03KH18N10T has a high ability to deep drawing than steel grades 08KH18N10T and 12KH18N10T.
Macrostructure and pollution	In the macrostructure of billets on the other 14-1-3935-85 in the state of delivery should be free of cracks, delamination, subcortical bubbles, curled up crusts, traces of shrinkage, inclusions, visible to the naked eye. Assessment of the quality of the macrostructure of a metal are also in points. For billets of metal of all kinds of smelting the Central porosity, point heterogeneity and phase separation in the square should not exceed a score of 1.0 for each species. For pipe billets with a diameter more than 110 mm of metal open arc and vacuum-induction melting Central porosity, point heterogeneity and phase separation in the square should not exceed a score of 2.0 for each species.
Corrosion resistance	Tubular billet on the other 14-1-3935-85 must withstand the test of intercrystalline corrosion.