GH3128 Alloy Bar
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Nickel alloy GH3128 (GH128) is a nickel-based alloy that is solid solution strengthened with tungsten and molybdenum and grain boundary strengthened with boron, cerium and zirconium. It has high plasticity, high permanent creep strength, and good oxidation resistance, stamping and welding properties. Its comprehensive performance is superior to similar nickel-based solid solution alloys such as GH3044 and GH3536.
Chemical composition(mass fraction)(wt.%) of the GH3128
| Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.05 | ||
| Cr | 19.0 | 22.00 | ||
| Mo | 7.50 | 9.00 | ||
| Ni | - | Remainder | ||
| W | 7.50 | 9.00 | ||
| Al | 0.40 | 0.80 | ||
| Ti | 0.40 | 0.80 | ||
| Fe | - | 2.0 | ||
| Si | - | 0.80 | ||
| Mn | - | 0.50 | ||
| P | - | 0.013 | ||
| S | - | 0.013 | ||
| B | - | 0.005 | ||
| Ce | - | 0.05 | ||
| Zr | - | 0.06 |
Mechanical properties of grade GH3128
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 353 (≥) | 944 (≥) | 43 | 13 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 |
Physical properties of grade GH3128
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
|---|---|---|---|---|---|
| 725 (≥) | 725 (≥) | 13 | 43 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
- | - | - |
| 445 | 949 | 944 | - | - | - |
superalloy gH3128 Bar Process performance and requirements
1. The furnace temperature during ingot forging is not higher than 700℃, and the final forging temperature is greater than 900℃.
2. The average grain size of the alloy is closely related to the degree of deformation of the forging and the final forging temperature.
3. The alloy can be welded by argon arc welding, spot welding, seam welding and other methods.
Package&delivery
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