Haynes 230
Haynes230, UNS N06230, is a nickel based high temperature alloy. Nickel forms the balance, with 20% to 24% chromium, 13% to 15% tungsten, 1% to 3% molybdenum, and smaller amounts of aluminum and iron. Solid solution strengthening provides high temperature strength, oxidation resistance, corrosion resistance, and long term thermal stability. The source lists continuous service up to 1149℃, resistance to oxidation and nitridation, a relatively low thermal expansion coefficient, and good workability for complex components used under severe conditions.
Product details
Chemical composition
| Haynes230 | C | Si | Mn | P | S | Ni | Cr | Mo | Fe | W | B | Co | Al | La |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | 0.05 | 0.25 | 0.3 | – | – | – | 20.0 | 1.0 | – | 13.0 | – | – | 0.2 | 0.005 |
| max | 0.15 | 0.75 | 1.0 | 0.03 | 0.015 | Bal | 24.0 | 3.0 | 3.0 | 15.0 | 0.015 | 5 | 0.5 | 0.05 |
Grade equivalents
| English Item | UNS | W.Nr. | JIS | GB/T | Other Grades |
|---|---|---|---|---|---|
| Haynes 230 Alloy 230 Inconel 230 | N06230 | 2.4733 | – | GH3044 GH44 | NiCr22W14Mo XH60BT ЭИ868 BЖ98 |
Physical properties
| Density g/cm³ | 8.8 |
|---|---|
| Melting range ℃ | 1370-1400 |
| Thermal conductivity (100℃) λ/(W/m•℃) | 11.3 |
| Specific heat J/kg•℃ | 460 |
| Elastic modulus GPa | 204 |
| Electrical resistivity μΩ•m | 1.25 |
| Linear expansion coefficient a/10-6℃-1 | 13.2 |
Mechanical properties
| Tensile strength Rm N/mm | ≥758 |
|---|---|
| Yield strength RP0.2 N/mm | ≥310 |
| Elongation % | ≥35 |
| Hardness HB | ≤241 |
| *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?
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