... for optional Detailed Product Description .4140/1.7225 alloy tool steel bar 1.Grade:Alloy steel bar AISI 4140 / GB 42CrMo / DIN 1 ... / Annealed / Quenched / tempered), Rough machining. Below is our main hot sell products: Plastic mould steel: 1.2311, 1.2738, P21, 1 ... D2, D3, D6 etcHigh speed steel: M2, M35, M42 etc.Carbon steel: AISI1045, AISE1050, Q235, SS400 etc.Stainless steel: AISI321, 302, 304, 202 ...