GH1138
China GBT GH1138 High temperature iron base alloy and GH1138 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | GH1138 | GBT | China | High temperature iron base alloy |
| GH3044 | |||||
| GH3128 | |||||
| GH4033 | |||||
| GH4037 | |||||
| GH4043 | |||||
| GH4049 | |||||
| GH4133 | |||||
| GH4169 | |||||
| GH1013 | |||||
| GH1014 |
Chemical composition(mass fraction)(wt.%) of the GH1138
| C(％) | Mn(％) | Cr(％) | Ni(％) | Mo(％) | W(%) | B(%) | Nb(%) | Al(%) | Fe(%) | Other(%) |
|---|---|---|---|---|---|---|---|---|---|---|
| Max 0.10 | 1.0-2.0 | 18.0-22.0 | 35.0-40.0 | 2.0-2.6 | 4.5-5.2 | Max 0.008 | 1.0-1.7 | Max 0.5 | Balance | Si:Max 0.8,Ce:Max 0.05,N :0.10-0.25,Zr:Max 0.05 |
Mechanical Properties of steel grade GH1138
| 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) |
|---|---|---|---|---|---|---|
| 378 (≥) | 756 (≥) | 22 | 41 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 314 |
Physical Properties of steel grade GH1138
| 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 |
|---|---|---|---|---|---|---|---|
| 22 | – | – | 0.13 | – | |||
| 398 | 533 | – | 34.3 | 322 | – | ||
| 855 | – | 42 | 13.2 | 234 | 433 |
Heat Treatment of steel grade GH1138
Heat treated : 1553°C – 1884°C
Technological Curves of steel grade GH1138
No Curve