Chinese-made American standard steel plate grades ASTM SA517 classA Chemical composition of pressure vessel plates&Mechanical properties
ASTM SA517 classA Approaching Steel Plate Grade Lookup Table

ASTM SA517 classA  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V B Ti Cu Nb Zr …
SA517 classA Smelting
Analysis		 Finished Product Analysis 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 ≤0.0025 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
0.15-0.21 0.13-0.23 0.80-1.10 0.74-1.20 0.40-0.80 0.34-0.86 0.50-0.80 0.46-0.84 0.18-
0.28		 0.15-
0.31		 0.05-0.15 0.04-0.16

ASTM SA517 classA  Mechanical properties

Grade Mechanical properties
ReH Rm KV₂ Elongation（%） Area reduction
(Circular sample)		 Area reduction
(Rectangular specimen)
SA517 classA Steel plate thickness
≤2.5inch
（65mm）		 Steel plate thickness＞
2.5inch~6inch
（65~150mm）		 Steel plate thickness
≤2.5inch
（65mm）		 Steel plate thickness＞
2.5inch~6inch（65~150mm）		 Steel plate thickness
≤2.5inch
（65mm）		 Steel plate thickness＞
2.5inch~6inch（65~150mm）		 Steel plate thickness
≤2.5inch
（65mm）		 Steel plate thickness＞
2.5inch~6inch（65~150mm）		 Steel plate thickness
≤2.5inch
（65mm）		 Steel plate thickness＞
2.5inch~6inch（65~150mm）
690 620 795-930 725-930 ≥16 ≥14 ≥35 ≥45 ≥45