Steel 40KH10S2M (ЭИ107)

Steel 10Х11Н20Т2Р (ЭИ696А) 10X23H10 steel Steel 10KH23N18 (0Х23Н18) Steel 12Х25Н16Г7АР (ЭИ835) Steel 20X23H18 (EI417) Steel 40Х10С2М (ЭИ107) Steel 40Х9С2 (4Х9С2) Steel 45Х22Н4М3 (EP48) Steel 55Kh20G9AN4 (EP303) To access the entire list

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	40Х10С2М
Designation GOST Latin	40X10C2M
Transliteration	40H10S2M
The chemical elements	40Cr10С2Mo

Name	The value
Name	The value
Designation GOST Cyrillic	ЭИ107
Designation GOST Latin	EI107
Transliteration	EhI107
The chemical elements	-

Description

40KH10S2M steel is used: for the manufacture of valves of aircraft engines, automobile and tractor diesel engines, fasteners engines.

Note

Steel heat-resistant and heat-resistant martensitic class.
Has high mechanical properties up to 600 °C, however, prolonged exposures at 500 °C and especially at 600 °C the impact strength is sharply reduced to 150 kJ/m².
Temperature intense scaling in air +850 °C.
Stable in sulfur-containing environments.

Standards

Name	Code	Standards
Name	Code	Standards
Sheets and stripes	В23	GOST 103-2006
Sectional and shaped rolling	В22	GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Sheets and stripes	В33	GOST 4405-75
Classification, nomenclature and general norms	В30	GOST 5632-72
Sectional and shaped rolling	В32	GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 18907-73, TU 14-1-377-72, TU 14-1-3957-85, TU 14-1-4095-86, TU 14-11-245-88
Bulls. Blanks. Slabs	В21	OST 1 90176-75
Bulls. Blanks. Slabs	В31	OST 3-1686-90

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
GOST 5632-72	0.35-0.45	≤0.025	≤0.03	≤0.8	9-10.5	1.9-2.6	≤0.6	The rest	≤0.3	≤0.2	≤0.2	0.7-0.9	≤0.2

Fe is the basis.

Mechanical characteristics

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_B, MPa	d₅, %	y, %	kJ/m², кДж/м²	Brinell hardness number, MPa
Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_B, MPa	d₅, %	y, %	kJ/m², кДж/м²	Brinell hardness number, MPa
Bars hot rolled and forged GOST 5949-75 and Forming at OST 1 90176-75. Annealing in air from 1010-1050 °C + Vacation at 720-780 °C, cooling in oil
	-	≥735	≥930	≥10	≥35	≥196	269-341
Rolled steel. Annealing in air from 950-1050 °C + Vacation
-	200	-	≥1780	≥3	≥8	≥383	≥555
Quenching in oil with 1100 °C + Vacation at 800 °C, cooling in water
-	-	≥670	≥940	≥19	≥41	-	-
Rolled steel. Annealing in air from 950-1050 °C + Vacation
-	300	-	-	≥12	≥20	-	≥540
Quenching in oil with 1100 °C + Vacation at 800 °C, cooling in water
-	-	≥570	≥840	≥14	≥26	-	-
Rolled steel. Annealing in air from 950-1050 °C + Vacation
-	400	-	-	-	-	-	≥570
Quenching in oil with 1100 °C + Vacation at 800 °C, cooling in water
-	-	≥510	≥820	≥18	≥39	-	-
Rolled steel. Annealing in air from 950-1050 °C + Vacation
-	500	-	-	-	-	-	≥545
Quenching in oil with 1100 °C + Vacation at 800 °C, cooling in water
-	-	≥520	≥830	≥15	≥36	-	-
Rolled steel. Annealing in air from 950-1050 °C + Vacation
-	600	-	≥1400	≥22	≥68	-	≥400
Quenching in oil with 1100 °C + Vacation at 800 °C, cooling in water
-	-	≥480	≥760	≥13	≥24	-	-
Rolled steel. Annealing in air from 950-1050 °C + Vacation
-	700	-	≥850	≥50	-	≥569	≥250
Quenching in oil with 1100 °C + Vacation at 800 °C, cooling in water
-	-	≥455	≥660	≥21	≥41	-	-
-	-	≥370	≥430	≥30	≥71	-	-
-	-	≥200	≥220	≥41	≥92	-	-
Rolled steel. Quenching in oil from 1010-1050 °C + Vacation at 750 °C, cooling in oil (short test)
-	-	-	≥930	≥10	≥35	-	-
-	-	-	≥390	≥18	≥85	-	-
-	-	-	≥160	≥27	≥96	-	-
-	-	-	≥59	≥30	≥98	-	-
-	-	-	≥34	≥48	≥98	-	-

Description mechanical marks

Name	Description
Name	Description
Section	Section
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_B	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
kJ/m²	Toughness

Physical characteristics

Temperature	Е, ГПа	r, кг/м3	l, Вт/(м · °С)	R, НОм · м	a, 10-6 1/°С	С, Дж/(кг · °С)
Temperature	Е, ГПа	r, кг/м3	l, Вт/(м · °С)	R, НОм · м	a, 10-6 1/°С	С, Дж/(кг · °С)
0	214	7620	17	-	-	-
20	214	7620	17	-	-	-
100	211	7610	18	906	10	-
200	205	-	20	958	11	-
300	202	-	22	1010	11	-
400	196	-	22	1062	11	532
500	187	-	24	1114	-	561
600	172	-	25	1166	11	561
700	151	-	26	1216	-	-
800	129	7430	-	-	11	586
1000	-	-	-	-	11	-

A description of the physical symbols

Name	Description
Name	Description
Е	The normal elasticity modulus
G	Modulus of elasticity shear torsion
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Technological properties

Name	The value
Name	The value
Weldability	difficult weldability. Welding method SMAW required heating and subsequent heat treatment.
Propensity to temper brittleness	tend not
Forging temperature	Start - 1200 °C, the end - 850 °C. the cross Sections up to 350 mm are cooled in the pits.
Flock-sensitive sensitivity	not sensitive

Steel 40KH10S2M (ЭИ107)

Designation

Description

Note

Standards

Chemical composition

Mechanical characteristics

Description mechanical marks

Physical characteristics

A description of the physical symbols

Technological properties

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Steel 40KH10S2M (ЭИ107)

Designation

Description

Note

Standards

Chemical composition

Mechanical characteristics

Description mechanical marks

Physical characteristics

A description of the physical symbols

Technological properties

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