GH4738
China GBT GH4738 wrought Fe/Ni-base superalloy and GH4738 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | GH4738 | GBT | China | wrought Fe/Ni-base superalloy |
| GH4199 | |||||
| GH4202 | |||||
| GH4220 | |||||
| GH4413 | |||||
| GH4500 | |||||
| GH4586 | |||||
| GH4648 | |||||
| GH4698 | |||||
| GH4708 | |||||
| GH4710 |
Chemical composition(mass fraction)(wt.%) of the GH4738
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Mo(％) | Cu(%) | Co(%) | B(%) | Nb(%) | Al(%) | Ti(%) | La(%) | Fe(%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.03-0.10 | 0.15 | 0.10 | 0.015 | 0.015 | 18.00-21.00 | Bal | 3.50-5.00 | 0.100 | 12.00-15.00 | 0.003 -0.010 | – | 1.20 -1.60 | 2.75 -3.25 | – | ≤2.00 |
Mechanical Properties of steel grade GH4738
| 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) |
|---|---|---|---|---|---|---|
| 257 (≥) | 188 (≥) | 43 | 34 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 |
Physical Properties of steel grade GH4738
| 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 |
|---|---|---|---|---|---|---|---|
| 42 | – | – | 0.24 | – | |||
| 918 | 432 | – | 42.3 | 242 | – | ||
| 344 | – | 31 | 12.2 | 133 | 241 |
Heat Treatment of steel grade GH4738
Heat treated : 1867°C – 1365°C
Technological Curves of steel grade GH4738
No Curve