| Grade : | 40KH10S2M ( 40Х10С2М ) ( 4Х10С2М ЭИ107 ) |
| Classification : | High alloy high-temperature steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 40KH10S2M ( 40Х10С2М )
| C | Si | Mn | Ni | S | P | Cr | Mo | Ti | Cu |
| 0.35 - 0.45 | 1.9 - 2.6 | max 0.8 | max 0.6 | max 0.025 | max 0.03 | 9 - 10.5 | 0.7 - 0.9 | max 0.2 | max 0.3 |
Temperature of critical points for grade 40KH10S2M ( 40Х10С2М ).
| Ac1 = 810 , Ac3(Acm) = 950 , Ar3(Arcm) = 845 , Ar1 = 700 |
Mechanical properties under Т=20oС for grade 40KH10S2M ( 40Х10С2М )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Bar, GOST 5949-75 | Ø 60 | 930 | 735 | 10 | 35 | 200 | Guenching 1010 - 1050oC, air, Drawing 720 - 780oC, oil, |
| Brinell hardness for 40KH10S2M ( 40Х10С2М ) (annealing) , Bar GOST 5949-75 | HB 10 -1 = 197 - 269 MPa |
Technological properties for grade 40KH10S2M ( 40Х10С2М )
| Weldability: | hard weldability. |
| Flakes : | not predisposed |
| Temper brittleness: | not predisposed |
Physical properties for grade 40KH10S2M ( 40Х10С2М )
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.14 | 17 | 7620 | |||
| 100 | 2.11 | 10 | 18 | 7610 | 906 | |
| 200 | 2.05 | 11 | 20 | 958 | ||
| 300 | 2.02 | 11 | 22 | 1010 | ||
| 400 | 1.96 | 11 | 22 | 532 | 1062 | |
| 500 | 1.87 | 24 | 561 | 1114 | ||
| 600 | 1.72 | 25 | 586 | 1166 | ||
| 700 | 1.51 | 26 | 1216 | |||
| 800 | 1.29 | 11 | 7430 | |||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Equivalent steels for grade 40KH10S2M ( 40Х10С2М )
| Germany | Japan | France | England | European | Italy | Spain | China | Bulgaria | Hungary | Poland | South Korea | |||||||||||||||||
| DIN,WNr | JIS | AFNOR | BS | EN | UNI | UNE | GB | BDS | MSZ | PN | KS | |||||||||||||||||
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Types of delivery of grade 40KH10S2M ( 40Х10С2М )
| В22 - Graded and shaped rolling |
| B23 - Sheets and Strips |
| В32 - Graded and shaped rolling |
| B33 - Sheets and Strips |
Specification :
| Mechanical properties : | |
| sв | - Tensile strength , [MPa] |
| sT | - Yield stress, [MPa] |
| d5 | - Specific elongation at fracture , [ % ] |
| y | - Reduction of area , [ % ] |
| KCU | - Impact strength , [ kJ / m2] |
| HB | - Brinell hardness , [MPa] |
Physical properties : | |
| T | - Test temperature , [Grade] |
| E | - Young modulus , [MPa] |
| a | - Coefficient of linear expansion (range 20o - T ) , [1/Grade] |
| l | - Termal (heat) condition coefficient , [Watt/(m·Grade)] |
| r | - Density , [kg/m3] |
| C | - Specific heat ( range 20o - T ), [J/(kg·Grade)] |
| R | - Electrical resistance , [Ohm·m] |
Weldability : | |
| without limitations | - welding is done without heating and subsequent heat treeting |
| limited weldability | - welding is possible under heating up to 100-120 grade and subsequent heat treeting |
| hard weldability | - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing |
40KH10S2M ( 40Х10С2М ) - High alloy high-temperature steel: chemical composition, mechanical and physical properties, hardness
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