Chinese-made American standard steel plate grades ASTM A203E Chemical composition of pressure vessel plates&Mechanical properties
ASTM A203E Approaching Steel Plate Grade Lookup Table

Grade Chemical composition Mechanical properties Remark
C Mn Si S P Cr Ni … ReH Rm KV₂ 8inch[200mm]，% 2inch[50mm]，%
ASTM A203 E 0.23 0.88 0.13-0.45 0.025 0.025 - 3.18-3.82 40 [275] 70-90 [485-620] 17 21