MP159

High-Temp Steel

MP159

Specialty steel grade. ; equiv MP159 / UNS N07259). Nominal values—confirm mill certificate.

Chemical Composition (%)

NI33
CR19
MO9

Mechanical Properties

Tensile:≥1600 MPa;Yield:≥1500 MPa

Equivalent Standards

MP159

Applications

钴镍铬钼冷加工超高强。,Bar

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 N07259 MP159 / UNS N07259

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