N08825
High-Temp SteelN08825
Precipitation-hardening Ni-base superalloy, aerospace workhorse. (UNS (Ni); equiv UNS N07718 / AMS 5662 / GB 0Cr17Ni21Mo10Nb). Nominal values—confirm mill certificate.
Chemical Composition (%)
| NI | 38 |
|---|---|
| CR | 19.5 |
| FE | 22 |
| MO | 2.5 |
| CU | 1.5 |
| TI | 0.6 |
| C | 0.05 |
| MN | 1 |
| SI | 0.5 |
Mechanical Properties
Tensile(annealed):≥585 MPa;Yield:≥240 MPa;Elong:≥30%
Equivalent Standards
AMS 5662
Equivalent Grades
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.
Applications
沉淀硬化镍基，航空主力。,"Bar
Available Forms
Forging
Uses
Plate"
Heat Treatment
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.
Precautions
Solution treated 1050–1250 °C and aged (≈700–900 °C) to precipitate γ′/γ″ strengtheners; processed via vacuum induction + VAR/ESR for cleanliness.
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