T15
OtherT15
Tungsten-type high-speed steel. (ASTM A600; equiv ASTM A600 / DIN 1.3355 / JIS SKH2 / GB W18Cr4V). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 1.5 |
|---|---|
| W | 11 |
| CR | 3.75 |
| V | 4.5 |
| CO | 4.75 |
| P | 0.03 |
| S | 0.03 |
Mechanical Properties
Hardness(annealed):≤277 HB;Hardness(hardened):66-68 HRC
Chinese Standard
ASTM A600 T15
Equivalent Standards
ASTM A600
Applications
钨系高速钢。,Bar
Available Forms
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.
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
DIN 1.3355 / JIS SKH2 / GB W18Cr4V
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