03Н17К10В10МТ steel is used: for the manufacture of a tube blank; seamless pipes; parts special machinery; equipment and parts oil and gas, chemical and aerospace industries.

Note

Partenitskaya corrosion resistant high-temperature steel.

Standards

Name	Code	Standards
Blanks. Of the workpiece. Slabs	В31	TU 14-1-4477-88
Bars and shapes	В32	TU 14-1-4862-90, TU 14-1-2199-77

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	N	Al	Ti	Mo	W	Co
TU 14-1-4862-90	≤0.03	≤0.01	≤0.01	≤0.1	≤0.5	≤0.15	16-17.2	Rest	≤0.005	≤0.2	0.65-0.85	0.9-1.5	9-10.5	9.5-11
TU 14-1-2199-77	≤0.03	≤0.01	≤0.01	≤0.1	≤0.3	≤0.1	16-17	Rest	-	≤0.15	0.6-1	0.8-1.2	9.5-10.5	9.5-11

Fe is the basis.
According to TU 14-1-2199-77, the chemical composition is given for steel grade 03N17K10V10MT-VD (EP836-VD).
According to TU 14-1-4477-88 and TU 14-1-4862-90 the chemical composition is given for steel grade 03Н17К10В10МТ-ПД (ЭП836-ПД). The nitrogen content is indicated after vacuum-arc remelting. Deviations from the specified standards of chemical composition are allowed: by nickel +0.30%, by titanium ± 0.050%, by nitrogen + 0.5050% in the initial metal of the plasma smelting, by silicon and manganese, provided that their sum is not more than 0.250% , sulfur and phosphorus, provided that their amount will not be more than 0.020%. Steel is introduced at 0.030% by the calculation of ferrosilicon or metal lanthanum and chemical analysis in the finished steel is not determined.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
Bars on the other 14-1-4862-90. The longitudinal samples. Aging at 470-520 °C (exposure 1-4 hours), air cooling
	≥2110	-	-	≥45	≥343
	≥2110	-	-	≥45	≥343
	≥2060	-	-	≥45	≥294
Bars aged in the state of delivery on the other 14-1-2199-77
	≥2100	≥2200	≥6	≥45	≥290
Tubular billet on the other 14-1-4477-88. The aged at 470-510 °C (extract 3 hours, allowed 1, 2 and 4 hours), air cooling (samples with allowance for grinding, to determine the impact toughness samples of the groove type U)
	≥1960	-	-	≥35	≥290

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
y	The relative narrowing
KCU	Toughness

Technological properties

Name	The value
Macrostructure and pollution	The macrostructure of the metal should not have any traces of shrinkage, podnasadochnogo looseness, bubbles, cracks, foreign non-metallic inclusions, crusts, delamination, visible without using the magnifying devices. Norms of permissible defects of the macrostructure is the Central porosity, point heterogeneity, total and marginal spotting, segregation and exudation square should not exceed the first score according to GOST 10243; layer-by-layer crystallization and light rejection circuit characteristics are not. The contamination of steel billets, non-metallic inclusions should be no more than 1.5 points for each type of non-metallic inclusions according to GOST 1778. Allowed attacks for each type of inclusions up to 2.5 points on two sections of six. In the presence of osamdesetih inclusions of nitrides and carbonitrides, which are not corresponding in size with poliatlonu method "h" according to GOST 1778, contamination became such inclusions shall not exceed the maximum permissible poliatlonu (Annex 2). Billets are 100% ultrasonic control.

Steel 03Н17К10В10МТ (ЭП836)

Designation

Description