GH3044
High-Temp SteelGH3044
Precipitation-strengthened Ni-base superalloy. (YB/T 5231; equiv GB GH4169 / UNS N07718). Nominal values—confirm mill certificate.
Chemical Composition (%)
| CR | 23.5 |
|---|---|
| W | 13 |
| MO | 1.5 |
| FE | 4 |
| AL | 0.5 |
| TI | 0.3 |
| C | 0.1 |
| SI | 0.8 |
| MN | 0.5 |
Mechanical Properties
Tensile:≥735 MPa;Elong:≥30%
Chinese Standard
T 5231 GH3044
Equivalent Standards
GB GH4169
Equivalent Grades
Maintain the recommended heat-treatment envelope; prolonged time in embrittlement ranges reduces ductility. Use descaling/protective atmosphere to limit scaling.
Applications
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Available Forms
Forging
Uses
Plate"
Heat Treatment
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.
Precautions
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.
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