| Chemical composition
| % | Ni | Cr | Mo | Fe | Co | W | C | Mn | Si | P | S | Al | Cu | La | B | | min | balance | 14.5 | 14.0 | | | | | 0.30 | 0.20 | | | 0.10 | | 0.01 | | | max | 17.0 | 16.5 | 3.0 | 2.0 | 1.00 | 0.020 | 1.00 | 0.75 | 0.020 | 0.015 | 0.50 | 0.35 | 0.10 | 0.015 |
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Physical properties
| Density | 8.75 g/cm3 | | Melting range | 1335-1380℃ |
Features: Alloy S has excellent thermal stability, low thermal expansion and excellent oxidation resistance at 1093℃. It has good high temperature and thermal fatigue strength. It retains its strength and ductility after aging at temperatures of 427 to 871℃. Hastelloy S is particularly suitable for cyclical heating conditions where components must be capable of retaining their strength, ductility and metallurgical integrity after long time exposure.
Applications: Industrial furnaces, and gas turbine engine seal rings. Note: Alloy S is a registered trademark of Haynes International, Inc. | 