08KH17N6T steel is used: for the manufacture of ingots of ESR (electroslag remelting); the manufacture of parts of the wing devices, rudders, brackets; marine shafts and other components operating in seawater.

Note

Steel high-alloyed corrosion-resistant austenitic-martensitic class.
Steel 08KH17N6T recommended as a substitute for steel grades 09KH17N7JU and 09KH17N7JU1, because it has a high resistance against intergranular corrosion.

Standards

Name	Code	Standards
Classification, nomenclature and General rules	В30	GOST 5632-72
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-132-176-89
Processing of metals by pressure. Forgings	В03	OST 5Р.9125-84, TU 14-1-3589-83
Sheets and strips	В33	TU 14-1-2104-77
Bars and shapes	В32	TU 14-1-4386-87, TU 14-11-245-88

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	B	Ti	Mo	W	Ce
GOST 5632-72	≤0.08	≤0.02	≤0.035	≤0.8	16.5-18	≤0.8	5.5-6.5	Rest	≤0.3	≤0.2	≤0.003	0.15-0.35	≤0.3	≤0.2	-
TU 14-132-176-89	≤0.08	≤0.02	≤0.035	≤0.8	16.5-18	≤0.8	5.5-6.5	Rest	≤0.3	≤0.15	≤0.003	0.25-0.45	-	-	≤0.01

Fe is the basis.
According to GOST 5632-72, the chemical composition is given for steel grade 08Х17Н6Т (DI-21).
According to TU 14-132-176-89, the chemical composition is given for steel grade 08Х17Н6Т. Permissible deviations in chemical composition and content of residual elements are in accordance with GOST 5632. Vanadium is introduced into the steel at the rate of 0.15%, cerium by 0.010%, boron by 0.0030%. The mass fraction of vanadium is determined by chemical analysis and the results are recorded in the certificate - the content of vanadium is optional.

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa
Annealing in air 950-970 °C + Twice the intermediate processing of 740-760 °C, air cooling or water + Vacation
≤300	510-530	≥736	≥883	≥12	≥40	≥492	272-325
≤300	540-560	≥540	≥736	≥12	≥40	≥492	240-302

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
HB	Brinell hardness number

Steel 08KH17N6T (DI-21)

Designation

Description

Note

Standards

Chemical composition

Mechanical properties

Description mechanical marks

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