Chinese-made American standard steel plate grades ASTM A533 classB Chemical composition of pressure vessel plates&Mechanical properties
ASTM A533 classB Approaching Steel Plate Grade Lookup Table

ASTM A533 classB  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni …
A533 classB 0.25 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis 0.025 0.025 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
0.97-1.52 1.07-1.62 0.15-0.40 0.13-0.45 - - 0.45-0.60 0.41-0.64 0.40-0.70 0.37-0.73

ASTM A533 classB  Mechanical properties

Grade Mechanical properties Remark
ReH Rm KV₂
A533 classB Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3
50[345] 70[485] 83[570] 80-100[550-690] 90-115[620-795] 100-125[690-860] 18 16 16