A nickel-chromium-tungsten-molybdenum grade, Alloy 230 has outstanding oxidation resistance up to 1149 °C.
Alloy 230 has excellent long-term resistance to oxidation and thermal stability. In addition, the alloy also has good resistance to nitriding and carburising environments.
We stock Alloy 230 in a variety of product forms to suit different applications and fabrication methods, including plate, round bar, sheet and welding wire. To view available sizes and submit an inquiry, use the dropdown selector below.
| % | Ni | Cr | W | Mo | Co | Al | La | Mn | C | Si | Ph | S | B | Ti | Cu | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 47 | 20 | 13 | 1 | - | 0.20 | 0.005 | 0.30 | 0.05 | 0.25 | - | - | - | - | - | - |
| Max | 65 | 24 | 15 | 3 | 5 | 0.50 | 0.005 | 1 | 0.15 | 0.75 | 0.03 | 0.015 | 0.015 | 0.10 | 0.50 | 3 |
Alloy 230 has outstanding oxidation resistance and superior strength up to 1149 °C. Comparable to Alloy 600, Alloy 230 exhibits excellent nitriding and carburising resistance. The alloy is one of the most nitriding-resistant materials available.
Alloy 230 has excellent creep and fatigue resistance combined with long-term stability. In addition the alloy is resistance to grain coarsening when subject to elevated temperatures for prolonged periods.
Alloy 230 is easily fabricated and welded. As a result of its good ductility, Alloy 230 is readily formed by cold working.
| Mechanical & Physical Properties | 21.1°C | 538°C | 649°C | 704°C | 760°C | 816°C | 871°C | 927°C | 982°C | 1093°C |
|---|---|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength/MPa | 841.2 | 703.3 | 6668.8 | - | 537.8 | - | 310.3 | - | 172.4 | 89.6 |
| 0.2% Yield Strength/MPa | 420.6 | 303.4 | 303.4 | - | 324.1 | - | 234.4 | - | 124.1 | 68.9 |
| Reduction of area | - | - | - | - | - | - | - | - | - | - |
| Elongation/% | 47 | 54 | 57 | - | 61 | - | 75 | - | 50 | 37 |
| Charpy Impact V-notch | - | - | - | - | - | - | - | - | - | - |
| Minimum Creep 0.0001% per hr | - | - | - | - | - | - | - | - | - | - |
| 10,000 hr Rupture Strength(MPa) | - | - | 186.2 | 127.6 | 91 | 57.9 | 38.6 | 22.1 | 7.6 | - |
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