Hastelloy 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.
Chinese designation: 哈氏合金 S
| Element | Min % | Max % |
|---|---|---|
| Cr | 14.5 | 17 |
| Mo | 14 | 16.5 |
| Fe | — | 3 |
| Co | — | 2 |
| W | — | 1 |
| Mn | 0.3 | 1 |
| Si | 0.2 | 0.75 |
| Al | 0.1 | 0.5 |
| Cu | — | 0.35 |
| La | 0.01 | 0.1 |
| C | — | 0.02 |
| P | — | 0.02 |
| S | — | 0.015 |
| B | — | 0.015 |
| Ni | balance | — |
Chemical composition per the grade specification. Values are nominal; the mill test report is issued with every order, traceable to the heat number.
| Product form | ASTM / EN specification |
|---|---|
| Specification confirmed against ASTM/EN on enquiry | On request |
This grade is supplied to the applicable ASTM/EN specification, confirmed against your drawing or purchase order.
Hastelloy S (UNS N06635) is a nickel-based alloys grade. Hastelloy 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 integrit
ROBAN supplies Hastelloy S as in standard forms to your drawing, subject to specification confirmation.
Yes. Every order ships with a mill test report covering the actual heat analysis. 3.2 documentation is available where the contract requires it.
Stock items ship within 3 to 7 working days. Cut-to-size and forged items typically run 15 to 30 working days depending on quantity and specification. Send us your drawing or enquiry for a firm lead time.
Drawing, grade, dimensions, quantity and delivery date — we price from those.
Request a Quote →Heat analysis report issued with every order at no extra charge.
Quality documentation →Shearing, sawing and machining to the tolerances on your drawing.
Capabilities →Buyers often substitute within a family once service conditions, corrosion behaviour or fabrication method narrow the choice.
