Steel 08Х16Н11М3

Designation

Name	The value
Designation GOST Cyrillic	08Х16Н11М3
Designation GOST Latin	08X16H11M3
Transliteration	08H16N11M3
By chemical elements	08Cr16Н11Mo3

Description

08Х16Н11М3 steel is used: for the manufacture of sheets, forgings, pipes and fittings for the equipment of power installations working under pressure at elevated temperatures, long operating at temperatures up to +700 °C; blades and vanes, fasteners, discs of gas turbines.

Standards

Name	Code	Standards
Sheets and strips	В33	TU 14-1-3409-82
Steel pipes and fittings to them	В62	TU 14-3-1477-87
Blanks. Of the workpiece. Slabs	В31	TU 5.961-11255-84, TU 14-1-3119-81, TU 14-1-4453-88

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As	Al	Ti	Mo	Sn	Sb	Pb	Bi	Nb	W	Zr
TU 5.961-11255-84	≤0.08	≤0.02	≤0.025	1-1.7	15-17	0.3-0.8	10-12	Rest	≤0.25	-	≤0.01	-	≤0.1	2-2.5	≤0.01	≤0.01	≤0.001	≤0.005	-	-	-
TU 14-1-3119-81	≤0.08	≤0.02	≤0.02	1-1.7	15-17	0.4-0.8	10-12	Rest	≤0.25	-	-	-	≤0.1	2-2.5	-	-	-	-	-	-	≤0.1
TU 14-1-4453-88	≤0.08	≤0.01	≤0.02	1-1.7	15-17	0.4-0.8	10-12	Rest	≤0.2	≤0.04	-	≤0.2	≤0.2	2-2.5	-	-	-	-	≤0.2	≤0.2	-

Fe is the basis.
According to TU 5.961-11255-84 the chemical composition is given for the brand 08H16N11M3-VD. For steel grades 08Х16Н11М3 and 08Х16Н11М3-Ш the results of As, Pb, Sn, Sb, Bi content are not delivery, but are entered in the quality document. At the request of the consumer, the cobalt content is Co≤0.030%.
According to TU 14-1-4453-88 the chemical composition is given for the brand 08H16N11M3-PD, melted in a plasma furnace with subsequent vacuum-arc remelting. Permissible deviations from the norms of chemical composition and mass fraction of residual elements in accordance with GOST 5632.
According to TU 14-1-3119-81 for steel grade 08H16N11M3, the zirconium content calculated and chemical analysis is not determined. The content of impurities of non-ferrous metals (tin, arsenic, lead, zinc, antimony, bismuth) should not exceed the 1 st point of a ten-point scale of spectral analysis. The content of residual elements in steel should be in accordance with GOST 5632.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
Tubes without heat treatment in the state of delivery
	≥220	≥540	35-40	≥50	≥1400
Sheets, sheet blanks, stamped sheet blanks after the main t/o (austenization) of steel grade 08Х16Н11М3-VD
≤100	≥216	≥519	≥50	-	-
≤100	≥127	≥392	≥30	-	-
≤100	≥98	≥343	≥30	-	-
100-160	≥206	≥509	≥45	-	-
100-160	≥127	≥392	≥25	-	-
100-160	≥98	≥343	≥25	-	-
Forgings and forged plates from the ingot after the main t/o (austenization) of steel grade 08Х16Н11М3-VD
≤250	≥206	≥509	≥50	-	-
≤250	≥147	≥392	≥30	-	-
≤250	≥98	≥343	≥30	-	-
250-500	≥196	≥490	≥45	-	-
250-500	≥118	≥343	≥25	-	-
250-500	≥98	≥274	≥25	-	-
Pipe ingots of steel grade 08Х16Н11М3-PD on the other 14-1-4453-88. Austenization at 1050-1100 °C, air cooling (longitudinal samples)
20-25	≥245	≥530	≥50	≥70	-
20-25	≥88	≥200	≥30	≥50	-

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

Physical characteristics

Temperature	Е, HPa	r, kg/m³	a, 10^-6 1/°C
20	214	7900	-
400	184	-	184
500	175	-	19
100	-	-	171
200	-	-	176
300	-	-	181
600	-	-	193
700	-	-	196
800	-	-	198

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.
Pressure treatment	The degree okowa a tube blank on the other 14-1-4453-88 must be at least 3.0.
Macrostructure and pollution	Macrostructure of steel billets on the other 14-1-4453-88 should not have cracks, subcortical bubbles, residues shrinkage, foreign non-metallic inclusions that are visible without using the magnifying devices. Permitted in the macrostructure of billets of Central and total porosity, spot inhomogeneity, as well as spotty liquation not more than 1 point on the scale GOST 10243. The heterogeneity of the macrostructure of the type "layer-by-layer crystallization" and "light contour" rejection symptom are not. Steel billets are tested for contamination of non-metallic inclusions with maximum points sh8 method according to GOST 1778 and shall not exceed the standards: - sulphides (S) ≤ 1.5 points; - the oxide stroke (OS) ≤ 2.0 points; - point oxides (FROM) ≤ 2.0 points; * fragile silicates (CX) ≤ 1.0 points; - the silicates plastic (SP) ≤ 1.0 points; - the non-deformable silicates (HF) ≤ 2.0 points; - nitrides (N) ≤ 2.5 points.
Microstructure	The content of ferrite (alpha-phase) in the steel determined by ladle sample shall be between 1.0 and 5.0%.