РК5
OtherРК5
Russian GOST high-speed steel RK5.
Chemical Composition (%)
| C | 1.3 |
|---|---|
| SI | 0.2 |
| MN | 0.2 |
| CR | 4 |
| MO | 4.8 |
| W | 9 |
| V | 2.8 |
| CO | 4.5 |
| P | 0.05 |
| S | 0.05 |
Applications
International high-end steel for aerospace, oil & gas, defense or engineering.
Available Forms
Bar, plate, sheet, tube, forgings, strip, wire, powder
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈5%) 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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