706

High-Temp Steel

706

Specialty steel grade. ; equiv UNS N09706 / AMS 5607). Nominal values—confirm mill certificate.

Chemical Composition (%)

NI	39
CR	14
NB	2.5
TI	1.5

Mechanical Properties

Tensile:≥1170 MPa;Yield:≥930 MPa

Chinese Standard

ASTM B637 706

Equivalent Standards

AMS 5607

Equivalent Grades

UNS N09706

Applications

低镍718，加工性好。,"Bar

Available Forms

Forging"

Uses

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.

Heat Treatment

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

Precautions

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.

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706