a570 steel equivalent
-----|----------------|--------------|---------------------|---------------------| | Carbon (C) | Up to 0.26 | Up to 0.26 | Up to 0.22 | Up to 0.20 | | Manganese (Mn) | 0.60-0.90 | 0.60-0.90 | 1.40-1.70 | 1.50-1.60 | | Phosphorus (P)
