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

ASTM SA517 classS  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V B Ti Cu Nb Zr …
SA517 classS 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 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
0.10-0.20 0.10-0.22 1.10-1.50 1.02-1.62 0.15-0.40 0.13-0.45 0.10-
0.35		 0.10-
0.38		 0.06 0.07 0.06 0.07

ASTM SA517 classS  Mechanical properties

Grade Mechanical properties Remark
ReH Rm KV₂ Elongation（%） Area reduction
(circular sample)		 Area reduction
(rectangular specimen)
SA517 classS 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~6inch
（65~150mm）		 Steel plate thickness > 2.5 inches to 6 inches (65~150 mm)
690 620 795-930 725-930 ≥16 ≥14 ≥35 ≥45 ≥45