ASTM A242

The  ASTM A242 specification is the Standard Specification  for High-Strength Low- Alloy Structural Steel for structural members where weight savings and atmospheric corrosion resistance are important.  Mechanical property requirements are specified by  product type (Plates and Bars, and Structural Shapes) and by thickness. The required ASTM G101 Corrosion Resistance Index must be ≥ 6.0.