China GB GH1139 Superalloys Iron-based superalloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Superalloys | GH1139 | GB | China | Iron-based superalloy | 
| C | Cr | Ni | B | Mn | Si | N | 
|---|---|---|---|---|---|---|
| ≤0.12 | 23.0 -26.0 | 15.0 -18.0 | ≤0.01 | 5.0 -7.0 | ≤1.0 | 0.30 -0.45 | 
| 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) | 
|---|---|---|---|---|---|---|
| 482 (≥) | 217 (≥) | 34 | 43 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 322 | 
| 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 | - | - | 0.13 | - | |||
| 457 | 227 | - | 22.3 | 314 | - | ||
| 577 | - | 12 | 41.2 | 131 | 223 | 
Heat treated : 1936°C - 1514°C
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