P355GH钢板化学成分：P355GH钢板→C（碳）→0.10—0.22；P355GH钢板→Si（硅）→≤0.60；P355GH钢板→Mn（锰）→1.10—1.70；P355GH钢板→P（磷）→≤0.025；P355GH钢板→S（硫）→≤0.015；
P355GH钢板力学性能：P355GH钢板→抗拉强度→510—650MPa；P355GH钢板→屈服强度→≥345MPa；P355GH钢板→伸长率→≥20%；P355GH钢板→冲击功→27J；