Chinese-made American standard steel plate grades ASTM A387-12 Chemical composition of pressure vessel plates&Mechanical properties
ASTM A387-12 Approaching Steel Plate Grade Lookup Table

Grade Chemical composition Mechanical properties Remark
C Mn Si S P Cr Ni Mo … ReH Rm KV₂ 8inch[200mm]，% 2inch[50mm]，%
ASTM A387-12 0.04-0.17 0.35-0.73 0.13-0.45 0.025 0.025 0.74-1.21 - 0.4-0.65 230 380-550 - 22
275 450-585 - 22