... 28~35, HBS less than 235 P20 + Ni hot rolled steel sheet description :Chemical Composition: C Si Mn Cr ... requsted size):Thickness: 16~400MMWidth: 185~2200MMLength: 1500~2000MMHot rolled, Forging, Black, Hardened, Tempering, Hardness: 28~34HRC Material ... mould machined.Application:Used for various large-size mirror plastic mould, precision plastic mould, like: cars accessies, home appliances, electronic ...