... , low temperature resistant, and also apply to beam,Bridges,transmission tower, hoisting, ship, industrial furnace, container frame ,warehouse and Other ... could offer:1. 7Cr7Mo2v2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P0.030, S0.030, ... temp: Hardening 1110-1150 Temperings: 530Secondary: 61-63 HRCApplication: Steel for pressing mold, extrusive mold and tensile mold. 2. 4Cr5MoSiV1 ...