GH6783
High-Temp SteelGH6783 / H67830 (GH783)
GH6783 grade supplied by Shanxi Youte Steel (jlhsteel.net).
Chemical Composition (%)
| FE | 24 |
|---|---|
| C | 0.03 |
| SI | 0.5 |
| MN | 0.5 |
| P | 0.015 |
| S | 0.005 |
| CR | 2.5 |
| NI | 26 |
Available Forms
Bar, Forging, Sheet, Wire
Uses
Heat- and creep-resistant steel for elevated-temperature service with stable strength and oxidation resistance. Used in furnace parts, exhaust manifolds, turbine components, boiler tubes and engine valves.
Heat Treatment
Normally used in the solution-annealed or precipitation-hardened condition; stabilise/age per the grade (e.g., 650–800 °C ageing). Avoid long exposure in the sigma/475 °C embrittlement ranges.
Precautions
Maintain the recommended heat-treatment envelope; prolonged time in embrittlement ranges reduces ductility. Use descaling/protective atmosphere to limit scaling.
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