ASTM A285/A285M specification covers carbon steel plates of low- and intermediate-tensile strengths which may be made by killed, semi-killed, capped, or rimmed steel. These plates are intended for fusion-welded pressure vessels. Plates are normally supplied in the as-rolled condition. The steel shall conform to the required chemical compositions. The plates, as represented by the tension test specimens, shall conform to the mechanical property requirements.ASTM A285/A285M standard main steel grade:ASTM A285 Grade A,B,C(A285GRA,B,C).