1.Factory with 10years professional experience 2.EAF/ESR+Forged + ... 1921C/c mould steel HMD1Specialized tool steel(7CrSiMnV, CH, CH-1, Cr12MoV, 9Mn2V, CrWMn, GC15, T10A, CrSiMnMoV, HMD5,HMD1, G05 ... bars Dia: 80~450mm Length:2000-13000mm or as required 1) Chemical Composition(GB) % CSiMnCrMoV 0.701.00.851.0 ... like: cars accessies, home appliances, electronic equipment plastic mould HMD-1 alloy tool steel