Chinese-made American standard steel plate grades ASTM A387-11 Chemical composition of pressure vessel plates&Mechanical properties
ASTM A387-11 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 A387-11 0.04-0.17 0.35-0.73 0.44-0.86 0.025 0.025 0.94-1.56 - 0.4-0.7 240 415-585 - 22
310 485-620 - 22