Iron-based superalloy
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.10 | ||
| Cr | 18.0 | 22.0 | ||
| Mo | 2.0 | 2.6 | ||
| Ni | 35.0 | 40.0 | ||
| W | 4.5 | 5.2 | ||
| Al | - | 0.5 | ||
| Nb | 1.0 | 1.7 | ||
| B | - | 0.008 | ||
| Fe | - | Remainder | ||
| Mn | 1.0 | 2.0 | ||
| Si | - | 0.8 | ||
| Ce | - | 0.05 | ||
| N | 0.10 | 0.25 | ||
| Zr | - | 0.05 |
GH1138
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 997 (≥) | 178 (≥) | 24 | 21 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 121 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 583 (≥) | 933 (≥) | 31 | 11 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 746 | 622 | 531 |
We can customize the production of GH1138 grade, contact us for the best solution.
–sales@specificsteel.com