Haynes242

High-Temp Steel

Haynes242

Low-expansion Ni-base alloy. (UNS N10242; equiv Haynes 242 / UNS N10242). Nominal values—confirm mill certificate.

Chemical Composition (%)

NI50
CR17
NB4.75
MO2.8
TI0.65
AL0.2

Mechanical Properties

Tensile:≥1275 MPa;Yield:≥1035 MPa;Elong:≥12%

Applications

沉淀硬化镍基，航空主力。,Plate

Available Forms

Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Used in gas-turbine blades, aero-engine hot sections, combustors and advanced energy systems.

Uses

Solution treated 1050–1250 °C and aged (≈700–900 °C) to precipitate γ′/γ″ strengtheners; processed via vacuum induction + VAR/ESR for cleanliness.

Heat Treatment

Machining is difficult — use ceramic/PCBN tools, generous coolant and rigid setups. Keep clean (vacuum/inert melting) to avoid inclusions; avoid contamination by low-melting elements.

Precautions

UNS N10242 Haynes242 / Haynes 242 / UNS N10242

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