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

ASTM SA517 classQ  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V B Ti Cu Nb Zr …
SA517 classQ 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
0.14-0.21 0.12-0.23 0.95-1.30 0.87-1.41 0.15-0.35 0.13-0.37 1.00-1.50 0.94-1.56 0.40-0.60 0.36-0.64 1.20-1.50 1.15-1.55 0.03-0.08 0.02-0.09

ASTM SA517 classQ  Mechanical properties

Grade Mechanical properties Remark
ReH Rm KV₂ Elongation（%） Area reduction
(Circular sample)		 Area reduction
(Rectangular specimen)
SA517 classQ 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