Tool steel , mould steel , die steel , DIN 1.2510 / ASTM O1 Size range , Round bars 20 mm 300 mm Flat bars thickness 20 mm 350 mm Width 50 mm 600 mm Chemical composition (%) DIN standard : C: 0.85 1.10 , Si: 0.10 0.50 , Mn:1.00 1.40 , P?.030 , S?.030 , Cr:0.40 0.60 , W: 0.40 - 0.60 , V?.30 AISI standard: C: 0.90 1.05, Si: 0.15 0.35, Mn:1.00 1.20 , P?.035, S?.035, Cr:0.50 0.70 , V : 0.05 0.15 , W: 0.50 0.70 Hardness ?230HBS Grain Size : 5 7 Ultrasonic Test : Class C/c Sep 1921 is available . Delivery condition : EFS / ESR , hot forged / rolled bar , annealed , black surface / turned bright surface is available . Length : above 2000 mm Delivery time : Within 30 days generally . We are chinese professional tool steel and mould steel manufacturer and exporter . We are pleased to offer our high quality materials to all of the reliable customer all over the world . To know more about us pls visit our website We can offer Hot working tool steel : H13/1.2344 , 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 : round bars , dia upto 470mm . flat bars , thickness upto 400mm , width upto 800 mm Delivery condition : ESR / EAF / EFS , Hot forged/rolled bars , annealed / Q+T , black surface / turned bright surface .