high speed steel D3 Dia Size: 2~200mm RC Rockwell Hardness after hardening and temper: 63-66

high speed steel

D3Anneal temperature: 840-860oC

Relief annealing temperature: 720-760oC

Hardening temperature: 1210-1240oC

Hardening medium: salt bath under 600oC,aslo use oil cooling or air cooling

Normal temper temperature: 540-560oCRC Rockwell Hardness after hardening and temper: 63-66

Characteristic:Tungsten-molybdenum high speed steel developed by China, equivalent to W18Cr4V(T1) and W6Mo5Cr4V2(M2),

Application: Instead for W18Cr4V(T1) and W6Mo5Cr4V2(M2)

High speed steel bar D3