Chinese-made American standard steel plate grades ASTM A387-9 Chemical composition of pressure vessel plates&Mechanical properties
ASTM A387-9 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 A387-9 ≤0.15 0.25-0.66 ≤1.05 0.025 0.025 7.9-10.1 - 0.85-1.15 205 415-585 - 18
310 515-690 - 18