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Grade : | 20KH25N19S2L ( 20Х25Н19С2Л ) |
Classification : | Casting alloy steel with specific properties |
Equivalent grades: | Go here |
Fe | C | Si | Mn | Ni | S | P | Cr |
47.935 - 56.5 | max 0.2 | 2 - 3 | 0.5 - 1.5 | 18 - 20 | max 0.03 | max 0.035 | 23 - 27 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Casting, GOST 977-88 | to 100 | 491 | 245 | 25 | 28 | Guenching 1100oC, |
Hardening 1090 - 1110 ° C, Water, oil or air cooling |
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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] |
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