Russia GOST H70MΦ Specialsteel Russia GOCT standard deformation of high temperature alloy grades and chemical composition and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | H70MΦ | GOST | Russia | Russia GOCT standard deformation of high temperature alloy grades and chemical composition | 
| C | Si | Mn | P | S | Cr | Ni | Mo | Al | Ti | Fe | V | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.05 | ≤0.20 | ≤0.50 | ≤0.020 | ≤0.020 | ≤0.30 | ≤remaining | 25.00 -29.00 | ≤ ≥ | ≤0.15 | ≤0.80 | 1.40 -1.70 | 
| 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) | 
|---|---|---|---|---|---|---|
| 225 (≥) | 918 (≥) | 22 | 42 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 12 | - | - | 0.41 | - | |||
| 879 | 891 | - | 32.3 | 231 | - | ||
| 877 | - | 14 | 32.2 | 412 | 231 | 
Heat treated : 1683°C - 1255°C
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