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Grade : | 40KH24N12SL ( 40Х24Н12СЛ ) |
Substitute: | 35Х23Н7СЛ |
Classification : | Casting alloy steel with specific properties |
Equivalent grades: | Go here |
C | Si | Mn | Ni | S | P | Cr |
max 0.4 | 0.5 - 1.5 | 0.3 - 0.8 | 11 - 13 | max 0.03 | max 0.035 | 22 - 26 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Casting, GOST 977-88 | to 100 | 491 | 245 | 20 | 28 | Guenching 1050oC, |
Weldability: | without limitations. |
Flakes : | not predisposed |
Temper brittleness: | not predisposed |
Linear shrinkage : | 2.7 % |
Hardening 1040 - 1060 ° C, Water, oil or air cooling |
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 | 1.96 | 7800 | 860 | |||
100 | 18.4 | |||||
200 | ||||||
300 | ||||||
400 | ||||||
500 | 1.67 | |||||
600 | 1.57 | |||||
700 | 1.45 | |||||
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
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B82 - Steel Castings |
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 |
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