S290 PM
OtherS290 PM
Böhler PM HSS, high Co-V content for extreme wear resistance.
Chemical Composition (%)
| C | 1.8 |
|---|---|
| W | 8.5 |
| MO | 1.5 |
| CR | 4.5 |
| V | 4.2 |
| CO | 7 |
| P | 0.03 |
| S | 0.03 |
Mechanical Properties
Hardness(annealed):≤300 HB;Hardness(hardened):66-69 HRC
Equivalent Grades
Böhler S290 PM / PM Super HSS
Applications
Hard machining, aerospace alloys
Available Forms
Bar
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈8%) 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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