Equivalent grades GB DIN AISI JIS 4Cr13 1.2083 420 SUS 420 J 2 Chemical Composition C Si Mn Cr P S V 0.38-0.45 0.30-0.50 0.20-0.40 12.00-13.50 0.03MAX 0.03MAX 0.18-0.30 Available size Round Bar Diameter Length 10-380mm 2000-5800mm Flat Bar Thickness Width Length 12-500mm 60-610mm 2000-5800mm Smelting&shaping EF/ ESR+ hot forged/ hot rolled Surface condition Black surface/Milled