NiCr20TiAl

High-Temp Steel

NiCr20TiAl

Ni-base turbine blade alloy. (DIN 17240; equiv DIN 2.4952 / Nimonic 80A). Nominal values—confirm mill certificate.

Chemical Composition (%)

NI70
CR14
NB0.7
TI2.25
AL0.4
FE5

Mechanical Properties

Tensile:≥1170 MPa;Yield:≥790 MPa

Chinese Standard

DIN 17240 NiCr20TiAl

Applications

沉淀硬化镍基，弹簧螺栓。,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

DIN 2.4952 / Nimonic 80A

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