Nickel-base superalloy
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | 0.10 | ||
| Cr | 18.0 | 21.0 | ||
| Mo | 3.5 | 5.0 | ||
| Ni | - | Remainder | ||
| Co | 12.0 | 15.0 | ||
| Al | 1.2 | 1.6 | ||
| Ti | 2.75 | 3.25 | ||
| B | 0.003 | 0.01 | ||
| Fe | - | 2.0 | ||
| Zr | 0.02 | 0.08 |
GH4738
| 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) |
|---|---|---|---|---|---|---|
| 482 (≥) | 259 (≥) | 24 | 43 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 444 |
| 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 |
|---|---|---|---|---|---|---|---|
| 951 (≥) | 819 (≥) | 41 | 11 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 623 | 826 | 123 |
We can customize the production of GH4738 grade, contact us for the best solution.
–sales@specificsteel.com