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Steel 40KH10S2M (ЭИ107)

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

Designation

Name The value
Designation GOST Cyrillic 40Х10С2М
Designation GOST Latin 40X10C2M
Transliteration 40H10S2M
The chemical elements 40Cr10С2Mo
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
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
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 sT|s0,2, MPa σB, 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
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB 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)
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
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
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

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