Russia GOST 12X8 Specialsteel Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | 12X8 | Austenite | GOST | Russia | Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition |
C | Si | Mn | P | S | Cr | Ni | Mo | W | V | Ti |
---|---|---|---|---|---|---|---|---|---|---|
≤0.12 | 0.17 -0.37 | 0.30 -0.60 | ≤0.035 | ≤0.030 | 7.50 -9.50 | ≤0.40 | 0.60 -0.90 | 1.70 -2.20 | 0.15 -0.30 | ≤0.05 |
Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
---|---|---|---|---|---|---|
626 (≥) | 781 (≥) | 12 | 41 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 313 |
Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
---|---|---|---|---|---|---|---|
32 | - | - | 0.21 | - | |||
242 | 245 | - | 44.3 | 442 | - | ||
725 | - | 13 | 32.2 | 313 | 243 |
Heat treated : 1645°C - 1269°C
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