Steel 08Х15Н5Д2Т (ЭП410; VNS-2; ЭП225)

Designation

Name	The value
Designation GOST Cyrillic	08Х15Н5Д2Т
Designation GOST Latin	08X15H5D2T
Transliteration	08H15N5D2T
By chemical elements	08Cr15Н5Cu2Ti

Name	The value
Designation GOST Cyrillic	ЭП410
Designation GOST Latin	EP410
Transliteration	EhP410
By chemical elements	-

Name	The value
Designation GOST Cyrillic	ВНС-2
Designation GOST Latin	BHC-2
Transliteration	VNS-2
By chemical elements	WНС-2

Name	The value
Designation GOST Cyrillic	ЭП225
Designation GOST Latin	EP225
Transliteration	EhP225
By chemical elements	-

Description

08Х15Н5Д2Т steel is used: for the manufacture of hot rolled and forged bars and forgings intended for subsequent cold machining or hot for subsequent machining (stamping, forging, rolling, etc.) in the manufacture of machine parts; parts aviation units; welding wire used for welding parts and welding of steel structures in energy engineering; welding electrodes; welded and seamless-rolled rings for different purposes; soft and hard tapes with a thickness of 0.3 to 1.2 mm and a width of 400 mm.

Note

Corrosion resistant steel martensitic class.

Standards

Name	Code	Standards
Bars and shapes	В22	GOST 1133-71, GOST 2590-2006
Classification, nomenclature and General rules	В20	OST 1 90005-91
Blanks. Of the workpiece. Slabs	В31	OST 1 90252-77, OST 1 90344-83, OST 1 90357-84, TU 1-92-15-73, TU 14-1-1125-74, TU 14-1-2153-77, TU 14-1-3104-81
Processing of metals by pressure. Forgings	В03	TU 14-1-1530-75, TU 14-1-2902-80, TU 14-1-2918-80
Tape	В34	TU 14-1-2269-77, TU 14-1-3577-83
Sheets and strips	В33	TU 14-1-2476-78, TU 14-1-3426-82, TU 14-1-3849-84, TU 14-1-2907-80, TU 14-1-4583-88, TU 14-1-835-73
Bars and shapes	В32	TU 14-1-374-72, TU 14-1-744-73
Welding and cutting metals. Soldering, riveting	В05	TU 14-1-997-74, TU 14-1-997-2012
Steel pipes and fittings to them	В62	TU 14-159-165-87, TU 14-3-406-75, TU 14-3-411-75

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	Ti	Mo	Co
OST 1 90357-84	≤0.08	≤0.018	≤0.02	≤1	13.5-14.8	≤0.7	4.8-5.8	Rest	1.75-2.5	0.03-0.15	≤0.3	≤0.5
TU 14-1-2476-78	≤0.08	≤0.025	≤0.03	≤1	14.1-15.5	≤0.7	4.5-5.5	Rest	1.75-2.5	0.3-0.5	-	-
TU 14-1-2918-80	≤0.08	≤0.018	≤0.02	≤1	13.5-14.8	≤0.7	4.8-5.8	Rest	1.75-2.5	0.03-0.15	-	-
TU 14-1-3577-83	≤0.08	≤0.018	≤0.02	≤1	14-15	≤0.7	4.7-5.5	Rest	1.75-2.5	0.15-0.3	-	-
TU 14-1-744-73	≤0.08	≤0.018	≤0.02	≤1	13.5-14.8	≤0.7	4.8-5.8	Rest	1.75-2.5	0.03-0.15	-	≤0.5
TU 14-1-2907-80	≤0.08	≤0.025	≤0.03	≤1	14-15	≤0.7	4.7-5.7	Rest	1.75-2.5	0.15-0.3	-	-
TU 14-1-835-73	≤0.08	≤0.025	≤0.035	≤0.7	14-15	≤0.7	4.7-5.5	Rest	1.75-2.5	0.15-0.3	≤0.3	-

Fe is the basis.
According to TU 14-1-2902-80, the chemical composition is given for steel grades 08X15H5D2T-SH and 08X15H5D2T-VD.
According to TU 14-1-835-73, the chemical composition is given for steel grade 08H15N5D2T.
According to TU 14-1-997-74 and OST 1 90357-84 the chemical composition is given for steel 08Х15Н5Д2ТУ-Ш (ЭП410У-Ш).
According to TU 14-1-744-73 the chemical composition is given for 08Х15Н5Д2Т-Ш and 08Х15Н5Д2Т-ВД. When smelting steel by vacuum-arc remelting with the use of control over the magnetic sample, it is allowed both in the finished product and in the ladle sample, a deviation in the nickel content plus 0.4%.
According to TU 14-1-2918-80 the chemical composition is given for steel grades 08Х15Н5Д2Т-Ш and 08Х15Н5Д2Т-ВД. At the customer's request, the EP41U-SH and EP410U-VD steel is supplied with a carbon content of 0.05-0.08%, titanium for EP410U-VD steel in the range of 0.03-0.10%, nickel for EP410U-SH steel in the range 5.2-5.8% and for steel EP410U-VD of nickel in the range of 5.3-5.8%. In this case, the name "select" has been assigned.
According to TU 14-1-3577-83, the chemical composition is given for 08Х15Н5Д2Т-Ш (ЭП410-Ш, ВНС-2-Ш). Deviations in the finished product from the norms of the chemical composition for manganese, silicon and copper are allowed for +0.10% of each element, for chromium by minus 0.50%, for nickel by +0.20%, for phosphorus by +0.0050 %.
According to TU 14-1-2907-80 the chemical composition is given for steel grade 08H15N5D2T. In the steel grade 08H15N5D2T-Sh the sulfur content is not more than 0.018%, phosphorus is not more than 0.020%. In both grades, deviations from the chemical composition became permissible: for manganese, silicon and copper, 0.10% for each, for phosphorus + 0.0050%, for chrome, 0.50%. A residual molybdenum content of not more than 0.30% is allowed.
According to TU 14-1-2476-78, the chemical composition is given for steel grade 08Х15Н5Д2Т (ЭП225), 08Х15Н5Д2Т-ВД (ЭП225-ВД), 08Х15Н5Д2Т-Ш (ЭП225-Ш). Deviations in chemical composition are allowed in the finished product in accordance with GOST 5632.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₁₀	y, %	KCU, kJ/m²	HB, MPa	HRC
Quenching in water or air with the 950-975 °C
0.8-5	≥785	≥981	≥8	-	-	-	-	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	880-1080	-	-	-	-	246-311	25-31
Quenching in water or air with the 950-975 °C + Aging at 440-460 °C (aging 1 HR) air cooling
0.8-5	≥1079	≥1226	≥9	-	-	-	-	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	1130-1320	-	-	-	-	311-401	33-41
-	-	1230-1370	-	-	-	-	363-401	36-41
-	-	1230-1470	-	-	-	-	-	37-43
Ring welded steel grade 08Х15Н5Д2Т-W on OST 1 90252-77. Annealing in air from 950 °C
	≥785	≥1079	≥10	-	≥55	≥1177	-	-
	≥706	≥981	≥6	-	≥30	≥588	-	-
Tape supplied on the other 14-1-3577-83. Without additional heat treatment
	≥785	≥980	-	≥8	-	-	-	-
Tape supplied on the other 14-1-3577-83. Aging at 440-460 °C (exposure for 1 hour ± 10 minutes), air cooling
	≥1030	≥1230	-	≥9	-	-	-	-
	≥1275	≥1370	-	≥5	-	-	-	-
Tape supplied on the other 14-1-3577-83. Aging at 500-520 °C (extract 2,5 hours), air cooling
	≥980	≥1130	-	≥8	-	-	-	-
Cold-rolled sheet (0.7 to 5.0 mm) and hot-rolled steel (3,0-6,0 mm) made of steel 08Х15Н5Д2Т in the state of delivery on the other 14-1-2476-78. Quenching in water or air with the 950-975 °C
-	≥784	≥981	≥7	-	-	-	-	-
Cold-rolled sheet (0.7 to 5.0 mm) and hot-rolled steel (3,0-6,0 mm) made of steel 08Х15Н5Д2Т on the other 14-1-2476-78. Quenching in water or air with the 950-975 °C + Vacation at 380-400 °C (exposure for 1 hour), cooling air
	≥883	≥1079	≥8	-	-	-	-	-
Forgings, bars and rods, hot-rolled and forged. Annealing in air from 940-960 °C (aging for 1 hour) + Holiday at 640-660 °C (aging for 1 h), air cooling + Tempering in water from 950 °C (aging for 1 hour) + Holiday at 590-630 °C (delay 2-3 hours), air cooling
	≥685	≥880	≥15	-	≥60	-	-	-
	-	-	-	-	-	≥340	-	-
Forgings, bars and rods, hot-rolled and forged. Annealing in air from 950-1000 °C (exposure 0.5-1 h) + Vacation at 650 °C (delay of 1-3 h), air cooling + Tempering air from 950 °C followed by cold treatment at minus 70 °C (extract 2 h) + Aging at frequencies 425-450 °C (delay of 1-3 h), air cooling
	≥930	≥1230	≥10	-	≥55	≥780	-	-
Forgings, bars and rods, hot-rolled and forged. Quenched from 940-960 °C, air cooling
	≥785	≥1080	≥10	-	≥55	≥1170	-	-
	≥785	≥1080	≥10	-	≥55	≥1200	-	-
Rolled steel. Annealing in air from 950-1000 °C (exposure 0.5-1 h) + Vacation at 650 °C (delay of 1-3 h), air cooling + Tempering air with 950-1000 °C (exposure 0.5-1 h) + Vacation at 650 °C (delay of 1-3 h), air cooling
	≥930	≥1230	≥10	-	≥55	≥765	-	-
Rolled plates in the state of delivery on the other 14-1-2907-80. Heating to 650-680 °C, air cooling or furnace
	≤930	≤1030	≥10	-	-	-	-	-
Forming at OST 1 90357-84. Heating to 990-1010 °C, exposure for 1 hour + Quenching in air or in water + Aging at 415-435 °C for 1-3 hours
	≥930	≥1230	≥10	-	≥55	≥784	-	-

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
d₁₀	Elongation after rupture
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number
HRC	Rockwell hardness (indenter diamond spheroconical)

Technological properties

Name	The value
Macrostructure and pollution	Macrostructure of steel shall be no traces of shrinkage, delamination, foreign inclusions.