Grades available: SAE J404 8620 ASTM A681 D2 BS 970 (Part 1) 535A99 EN 10084 20NiCrMo2-2 CSA G40.21 400W SAE J404 4140 Commercial Mild Steel MS BS 970 EN24 ASTM A959 SS316 JIS G4801 SUP9 ASTM A709 Grade HPS 70W