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| Form | ASTM |
| Rod | B 572 |
| Plate, sheet and strip | B 435, B 906 |
| Seamless pipe and tube | B 622 |
| Welded pipe | B 619, B 775 |
| Welded tube | B 626, B 751 |
| Welding fitting | B 366 |
| Billet and bar for reforging | B 472 |
Chemical composition
| % | Ni | Cr | Fe | Mo | Co | W | C | Mn | Si | P | S |
| min | balance | 20.5 | 17.0 | 8.0 | 0.5 | 0.20 | 0.05 | ||||
| max | 23.0 | 20.0 | 10.0 | 2.5 | 1.00 | 0.15 | 1.00 | 1.00 | 0.040 | 0.030 |
Physical properties
| Density | 8.23 g/cm3 |
| Melting range | 1260-1355℃ |
Features: Hastelloy X is a nickel-chromium-iron-molybdenum alloy with an exceptional combination of high temperature strength, oxidation resistance and fabricability. It shows good ductility after prolonged exposure at temperatures up to 870℃ for 16000 hours. It also has excellent resistance to stress corrosion cracking in petrochemical Applications.
Applications: Gas turbine engine combustion zone components, industrial furnaces, chemical process industry.
Note: Hastelloy is a registered trademark of Haynes International, Inc.