Russia GOST 07X21Γ7AH5 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 | 07X21Γ7AH5 | 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 | Ti | N |
|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.07 | ≤0.70 | 6.00 -7.50 | ≤0.030 | ≤0.030 | 19.50 -21.00 | 5.00 -6.00 | ≤0.30 | ≤0.20 | ≤0.20 | 0.15 -0.25 |
| 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) |
|---|---|---|---|---|---|---|
| 871 (≥) | 675 (≥) | 41 | 21 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 |
| 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 |
|---|---|---|---|---|---|---|---|
| 14 | - | - | 0.31 | - | |||
| 118 | 429 | - | 31.3 | 314 | - | ||
| 917 | - | 32 | 31.2 | 344 | 122 |
Heat treated : 1888°C - 1595°C
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