925(718+)

High-Temp Steel

925(718+)

Precipitation-hardened 825 alloy. (ASTM B637; equiv UNS N09925). Nominal values—confirm mill certificate.

Chemical Composition (%)

NI38
CR19.5
MO2.5
TI1.5
AL0.1

Mechanical Properties

Tensile:≥965 MPa;Yield:≥655 MPa

Chinese Standard

ASTM B637 925(718+)

Applications

沉淀硬化825。,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 N09925

Request a Quote Back to category

Comments 0