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) |
|---|---|---|---|---|---|---|
| 534 (≥) | 839 (≥) | 44 | 11 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 |
| 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 |
|---|---|---|---|---|---|---|---|
| 24 | - | - | 0.12 | - | |||
| 648 | 877 | - | 24.3 | 141 | - | ||
| 993 | - | 21 | 21.2 | 122 | 241 |
Heat treated : 1864°C - 1745°C
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