K465
High-Temp SteelK465
K465 Ni-base cast superalloy. (GB/T 14992; equiv GB K465). Nominal values—confirm mill certificate.
Chemical Composition (%)
| CR | 8.5 |
|---|---|
| CO | 9.5 |
| W | 9.5 |
| AL | 5 |
| TA | 3.5 |
Mechanical Properties
Tensile:≥690 MPa;Yield:≥280 MPa;Elong:≥25%
Chinese Standard
T 14992 K465
Equivalent Standards
GB K465
Available Forms
Cast
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈10%) raises hot corrosion and wear resistance. 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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