Chinese-made American standard steel plate grades ASTM SA225 classD Chemical composition of pressure vessel plates&Mechanical properties
ASTM SA225 classD Approaching Steel Plate Grade Lookup Table

ASTM SA225 classD  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V …
SA225-classD ≤0.20 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis ≤0.035 ≤0.035 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
≤1.70 ≤1.84 0.10-0.50 0.08-0.56 0.40-0.70 0.37-0.73 0.10-0.18 0.08-0.20

ASTM SA225 classD  Mechanical properties

Grade Mechanical properties Remark
ReH Rm KV₂ Elongation at 8-inch or 200-mm gauge length（%）
SA225-classD ≤3in （75mm） ＞3in （75mm） All thicknesses ≤3in （75mm） ＞3in （75mm） All thicknesses 8 inches or 200 millimeters measuring length 2-inch or 50-mm gauge length Gauge length
≥380 ≥415 550-725 515-690 ≥19 ≥17