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 |
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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 |
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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 |
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Mechanical properties
| Tensile strength Rm N/mm | ≥758 |
|---|---|
| Yield strength RP0.2 N/mm | ≥310 |
| Elongation % | ≥35 |
| Hardness HB | ≤241 |
| *After solution heat treatment | |
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Applications
- Gas-turbine combustion chambers
- Industrial heating equipment
- Chemical reactors and piping
- High-temperature nuclear-reactor components
- Aircraft-engine nozzles and guide vanes
- Petroleum refining equipment
- Incinerator components in environmental-protection systems
Available product forms
- Round Bar
- Wire
- Forgings
- Plate
- Strip
- Seamless Pipe
- Welded Pipe
- Capillary Tube
- Flanges
- Pipe Fittings
- Non-standard Custom Parts
Values follow the Milike materials catalogue and are provided for preliminary review. Confirm the applicable purchase specification, heat treatment condition, and inspection requirements before final material selection.
- Heat and batch traceability
- PMI testing available
- Cut-to-size processing
- Material certificates on request
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