... P??.030 , S??.030 , Cr:4.80 5.80 , Mo: 1.10 1.40 , V: 0.25 0.50 ASTM standard: C: ... P??.030 , S??.030 ,Cr: 4.75 5.50 , Mo: 1.10 1.60 , V: 0.30 0.60Hardness ??235 HBSGrain Size : ... /1.2344 , H11/1.2343 , 1.2714 , 1.2767 etc.Cold working tool steel :D2/1.2379 , D3/1.2080, D6/1.2436 , O1/1.2510 ,1. ... 2316 etc.High speed steel : M2/1.3343 size range ...