HastelloyN

High-Temp Steel

HastelloyN

Specialty steel grade. i-base alloy. (UNS N10003; equiv Hastelloy N / UNS N10003). Nominal values—confirm mill certificate.

Chemical Composition (%)

CR14.5
MO15
FE4
W3

Mechanical Properties

Tensile:≥790 MPa;Yield:≥355 MPa;Elong:≥40%

Equivalent Grades

UNS N10003 HastelloyN / Hastelloy N / UNS N10003

Applications

镍钼铬耐强腐蚀（含氯）。,"Plate

Available Forms

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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