Steel 09KH18N10T (1Х18Н10Т)

Designation

Name	The value
Designation GOST Cyrillic	09Х18Н10Т
Designation GOST Latin	09X18H10T
Transliteration	09H18N10T
By chemical elements	09Cr18Н10Ti

Name	The value
Designation GOST Cyrillic	1Х18Н10Т
Designation GOST Latin	1X18H10T
Transliteration	1H18N10T
By chemical elements	1Cr18Н10Ti

Description

09KH18N10T steel is used: for the manufacture of extremely thin-walled cold — and warm-deformed pipes for pipelines and structures for various purposes.

Standards

Name	Code	Standards
Steel pipes and fittings to them	В62	GOST 10498-82, TU 14-159-165-87, TU 14-3-1070-81, TU 14-3-219-89, TU 14-3-643-77
Blanks. Of the workpiece. Slabs	В31	TU 14-1-3935-85, TU 14-1-790-73

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	N	Co
TU 14-3-219-89	0.07-0.1	≤0.02	≤0.035	1-2	17-19	≤0.8	10-11	Rest	≤0.05	≤0.02
GOST 10498-82	0.07-0.1	≤0.02	≤0.035	1-2	17-19	≤0.8	9-11	Rest	-	-

Fe is the basis.
According to GOST 10498-82 and TU 14-3-219-89 the chemical composition is given for steel 09Х18Н10Т, the content of Ti% = 5С% - 0,70%.
For steel grades 09Х18Н10Т-ВД and 09Х18Н10Т-Ш according to TU 14-3-219-89, the mass fraction of sulfur is ≤ 0.015%, phosphorus ≤ 0.025%.
According to TU 14-1-3935-85 the chemical composition is given for steel 09Х18Н10Т. The content of Ti% = 5C% is 0.70%. Metal processing is allowed up to 0.10% of the sum of the REM by calculation. The steel of electroslag and vacuum-arc remelting allowed the presence of manganese to 0.50%, and the mass fraction of sulfur should not be more than 0.015%, phosphorus - not more than 0.025%, permissible deviation from the chemical composition for carbon minus 0.010%. Mass fraction of residual elements - in accordance with GOST 5632.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Tubular billet on the other 14-1-3935-85. The longitudinal samples. Annealing in air or in water 1050-1100 °C
20-25	≥206	≥530	≥40
Extremely thin-walled tubes cold - and warm-deformed (wall thickness 0.2-1.0 mm) as supplied
-	-	≥529	-
Tubular billet on the other 14-1-3935-85. The longitudinal samples. Annealing in air or in water 1050-1100 °C
20-25	≥157	≥372	≥20

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

Technological properties

Name	The value
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.
Microstructure	In the tube blank on the other 14-1-3935-85 the content of the ferritic phase must not exceed 1.5 points, by agreement of the parties allowed 2.0 points.
Corrosion resistance	Tubular billet on the other 14-1-3935-85 must withstand the test of intercrystalline corrosion.