ISO | Materials | Material Designation | Material Condition | Cutting Speed Recommendations (Vc) |
H | 38 | Hardened steel. | Hardened :560 | 80-250 m/min |
H | 39 | Hardened steel. | Hardened :654 | 80-250 m/min |
H | 40 | Chilled cast iron. | Cast :400 | 80-250 m/min |
H | 41 | Cast iron. | Hardened :560 | 80-250 m/min |
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