... mould,cutting tools,and so on. SpecificationsHot-rolled Round barH13, M2, W9, W4. Annealed or GroundHot-rolled Round barSpecification: Diameter 8mm ... W ≤0.50,Mo 2.10, V 1.80Annealed Hardness: HB≤255Heat treatment temp: Hardening 1100-1150 Temperings 530Secondary 61-63 ... , W ≤0.30,Mo 1.35, V 0.90Annealed Hardness: HB≤235Heat treatment temp: Hardening 1020 Temperings 530-560Secondary 54-57HRCApplication ...