Nickel-base superalloy
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Cr | 9.0 | 12.0 | ||
| Mo | 5.0 | 7.0 | ||
| Ni | - | Remainder | ||
| Co | 14.0 | 15.0 | ||
| W | 5.0 | 6.5 | ||
| Al | 3.9 | 4.8 | ||
| Ti | 2.2 | 2.9 | ||
| B | - | 0.02 | ||
| Fe | - | 3.0 | ||
| V | 0.2 | 0.8 | ||
| Mg | - | trace |
GH4220
| 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) |
|---|---|---|---|---|---|---|
| 324 (≥) | 216 (≥) | 32 | 42 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 324 |
| 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 |
|---|---|---|---|---|---|---|---|
| 546 (≥) | 157 (≥) | 12 | 22 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 123 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 638 | 391 | 777 |
We can customize the production of GH4220 grade, contact us for the best solution.
–sales@specificsteel.com