1,tool steel s136 .2, Hardness: HRC=50~52 3, HBS<=235 4, Usage: plastic mould, tool steel ... s136 1. Size:RoundDiameterLength50mm-600mm2000mm-5800mmSteel plateThicknessWidthLength20-400mm185-2200mm2000mm-5800mm 2. Delivery Condition: ... 1. Hot rolled , black, 2. Hardness: HRC=28--33 ...