... hss and die steel round bar Cr12Mo1V1/D2/1.2379Hot rolling round bar: Diameter 8mm---32mmPrecisely-forged round bar: Diameter 50mm --- 220mmDelivery Condition ... Composition: C 0.39, Si 1.10, Mn 0.30, P≤0.028, S≤0.020, Cr 5.10, ... Si 0.38, Mn 0.35, P≤0.030, S≤0.030, Cr 4.10, W 6.00, Mo ... Si 0.38, Mn 0.35, P≤0.030, S≤0.030, Cr 4.10, W 6.00, Mo ... Si 0.38, Mn 0.35, P≤0.030, S≤0.030, Cr 4.10, W 6.00, Mo ...