GH4033

High-Temp Steel

GH4033

GH4033 Ni-base age-hardening superalloy, turbine blades. (GB/T 14992; equiv GB GH4033). Nominal values—confirm mill certificate.

Chemical Composition (%)

CR19
TI2.4
AL0.7
C0.07
SI0.6
MN0.35
FE4

Mechanical Properties

Tensile:≥880 MPa;Yield:≥590 MPa;Elong:≥10%

Chinese Standard

T 14992 GH4033

Equivalent Standards

GB GH4033

Available Forms

Forging,Bar

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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