GH3128 Nickel Alloy
GH3128 is a nickel based, solid solution strengthened high temperature alloy. Nickel forms the balance, with 19.0% to 22.0% chromium, 9.0% to 11.0% molybdenum, 2.0% to 3.0% tungsten, and smaller additions of boron, cerium, and zirconium. Tungsten and molybdenum provide solid solution strengthening, while the grain boundary additions support creep strength and oxidation resistance. The source compares its overall properties favorably with GH3044 and GH3536 and lists continuous service up to 950℃ for load bearing and oxidation resistant components.
Product details
Chemical composition
| GH3128 | C | Si | Mn | P | S | Ni | Cr | Mo | W | Ti | Al | Fe | Zr | B | Ce |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | – | – | – | – | – | – | 19 | 7.5 | 7.5 | 0.4 | 0.4 | – | – | – | – |
| max | 0.05 | 0.8 | 0.5 | 0.013 | 0.013 | Bal | 22.0 | 9.0 | 9.0 | 0.8 | 0.8 | 2.0 | 0.06 | 0.005 | 0.05 |
Grade equivalents
| English Item | UNS | W.Nr. | JIS | GB/T | Other Grades |
|---|---|---|---|---|---|
| – | – | – | – | GH3128, GH128, Red Star No. 11 | – |
Physical properties
| Density g/cm³ | 8.81 |
|---|---|
| Melting range ℃ | 1340~1390 |
| Thermal conductivity (100℃) λ/(W/m•℃) | 11.3 |
| Specific heat J/kg•℃ | 208 |
| Elastic modulus GPa | 208 |
| Electrical resistivity μΩ•m | 1.37 |
| Linear expansion coefficient a/10-6℃-1 | 11.25(20~100℃) |
Mechanical properties
| Tensile strength Rm N/mm | ≥735 |
|---|---|
| Yield strength RP0.2 N/mm | ≥320 |
| Elongation % | ≥40 |
| Hardness HB | – |
| *After solution heat treatment | |
Available product forms
- Round Bar
- Plate
- Pipe & Tube
- Welding Consumables
- Flanges
- Hex Bolts
- Threaded Rod
- Nuts & Washers
Technical values are transcribed and translated from the supplied Milike Chinese catalogue. Confirm the applicable purchase specification, heat treatment condition, and inspection requirements before final material selection.
Need a different size, condition, or inspection route?
Send the grade, standard, product form, quantity, dimensions, heat treatment condition, and required documents.