Chinese-made American standard steel plate grades ASTM SA543 Type B Class 1 Chemical composition of pressure vessel plates&Mechanical properties
ASTM SA543 Type B Class 1 Approaching Brand Lookup Table

ASTM SA543 Type B Class 1  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V B Ti Cu Nb Ca Zr …
SA543
Type B Class 1		 ≤0.20 ≤0.40 Smelting
Analysis		 Finished Product Analysis ≤0.020 ≤0.020 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis ≤0.03 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
0.15-0.40 0.13-0.45 1.00-1.90 0.94-1.96 0.20-0.65 0.16-0.69 2.25-4.00 2.18-4.07

ASTM SA543 Type B Class 1  Mechanical properties

Grade Mechanical properties Remark
ReH Rm KV₂ Elongation%
SA543
Type B Class 1		 585 725-860 2-inch (50 mm) gauge length elongation
≥14