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

ASTM SA517 classP  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V B Ti Cu Nb Zr …
SA517 classP 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 0.001-0.005 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
0.12-0.21 0.10-0.23 0.45-0.70 0.40-0.78 0.20-0.35 0.18-0.37 0.85-1.20 0.79-1.26 0.45-0.60 0.41-0.64 1.20-1.50 1.15-1.55

ASTM SA517 classP  Mechanical properties

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