International ISO ISO/TR 4956, X12CrMo12-6 Specialsteel Wrought steels for use at elevated temperatures in engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | X12CrMo12-6 | Bainite | ISO | International | Wrought steels for use at elevated temperatures in engines |
| C | Si | Mn | P | S | Cr | Mo | Ni | V |
|---|---|---|---|---|---|---|---|---|
| 0.08 -0.16 | ≤0.60 | 0.40 -1.00 | ≤0.035 | ≤0.035 | 11.50 -13.00 | 0.40 -0.80 | ≤1.00 | ≤ ≥ |
| 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) |
|---|---|---|---|---|---|---|
| 513 (≥) | 268 (≥) | 13 | 22 | 31 | 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 |
|---|---|---|---|---|---|---|---|
| 34 | - | - | 0.13 | - | |||
| 461 | 752 | - | 12.3 | 112 | - | ||
| 786 | - | 32 | 32.2 | 411 | 113 |
Heat treated : 1128°C - 1951°C
| ISO/TR 4956 | Wrought steels for use at elevated temperatures in engines | ISO-TR-4956.pdf |
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