Equivalent grades GB DIN AISI JIS 4Cr5MoSiV 1.2343 H11 SKD6 - Chemical composition C Si Mn Cr P S Mo V 0.36-0.42 0.90-1.20 0.30-0.50 4.80-5.80 0.03MAX 0.03MAX 1.10-1.40 0.25-0.50 Available size Round Bar Diameter Length 10-380mm 2000-5800mm Flat Bar Thickness Width Length 12-500mm 60-900mm 2000-5800mm Surface condition Black surface/ Grinded/ Machined