HastelloyC22

High-Temp Steel

HastelloyC22

Ni-Cr-Mo alloy. (UNS N06022; equiv Hastelloy C-22 / UNS N06022). Nominal values—confirm mill certificate.

Chemical Composition (%)

CR20
MO12.5
FE2
W2.5

Mechanical Properties

Tensile:≥760 MPa;Yield:≥355 MPa

Applications

广谱耐蚀镍基合金。,Plate

Available Forms

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.

Uses

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.

Heat Treatment

Maintain the recommended heat-treatment envelope; prolonged time in embrittlement ranges reduces ductility. Use descaling/protective atmosphere to limit scaling.

Precautions

UNS N06022 HastelloyC22 / Hastelloy C-22 / UNS N06022

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