GH3030 Nickel Alloy
GH3030 is a nickel based, solid solution strengthened high temperature alloy. Nickel forms the balance, with 19.0% to 22.0% chromium, 0.15% to 0.35% titanium, and smaller amounts of aluminum and iron. The source describes good thermal strength and ductility below 800℃, together with oxidation resistance, thermal fatigue resistance, and weldability. Solution treatment produces a single phase austenitic structure that remains stable in long term service. Its straightforward composition and workability suit load bearing parts and oxidation resistant structures used at elevated temperature.
Product details
Chemical composition
| GH3030 | C | Si | Mn | P | S | Ni | Cr | Ti | Cu | Al | Co | B | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | 0.08 | – | – | – | – | – | 18.0 | 0.2 | – | – | – | – | – |
| max | 0.15 | 1.0 | 1.0 | 0.02 | 0.015 | Bal | 21.0 | 0.6 | 0.5 | 0.3 | 5.0 | 0.006 | 5.0 |
Grade equivalents
| English Item | UNS | W.Nr. | JIS | GB/T | Other Grades |
|---|---|---|---|---|---|
| Nimonic 75 Nimonic 75A HAYNES 75 Alloy 75 | N06075 | 2.4951 2.4630 | – | GH3030 GH30 | NiCr20Ti Nicrofer 7520 ЭИ435 XH78T |
Physical properties
| Density g/cm³ | 8.4 |
|---|---|
| Melting range ℃ | 1374~1420 |
| Thermal conductivity (100℃) λ/(W/m•℃) | 15.1 |
| Specific heat J/kg•℃ | 565.2 |
| Elastic modulus GPa | 200 |
| Electrical resistivity μΩ•m | 1.099 |
| Linear expansion coefficient a/10-6℃-1 | 12.8(20~100℃) |
Mechanical properties
| Tensile strength Rm N/mm | ≥590 |
|---|---|
| Yield strength RP0.2 N/mm | ≥295 |
| Elongation % | ≥30 |
| Hardness HB | ≤321 |
| *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.