... 1. Professional manufacturer 2.Top grade flat bar 3. Maerial: M2/M35/W9/W18/M42, etcHSS FLAT BARSDelivery Condition: Annealed hardness HB≤ ... Composition: C 1.50, Si 0.35, Mn 0.35, P≤0.030, S≤0.030, Cr 12.10, W ≤ ... : C 1.60, Si 0.35, Mn 0.35, P≤0.030, S≤0.030, Cr 12.00, Mo 0 ... Composition: C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, Cr 7.10, W ≤ ... : C 1.00, Si 0.40, Mn 0.75, P≤0.030, S≤0.030, Cr 5.10, Mo 1 ...