ISO | Materials | Material Designation | Material Condition | Cutting Speed Recommendations (Vc) |
P | 1 | Non-alloy steel and cast steel, free cutting steel <0.25%C. | Annealed :125 | 80-300 m/min |
P | 2 | Non-alloy steel and cast steel, free cutting steel >=0.25%C. | Annealed :190 | 80-300 m/min |
P | 3 | Non-alloy steel and cast steel, free cutting steel <0.55%C. | Quench and tempered. :250 | 80-300 m/min |
P | 4 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Annealed :220 | 80-300 m/min |
P | 5 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Quenched & tempered. :300 | 80-250 m/min |
P | 6 | Low alloy & cast steel (less than 5% of alloying elements). | Annealed :200 | 80-300 m/min |
P | 7 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :275 | 80-300 m/min |
P | 8 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :300 | 80-250 m/min |
P | 9 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :350 | 80-250 m/min |
P | 10 | High alloyed steel, cast steel and tool steel. | Annealed :200 | 80-300 m/min |
P | 11 | High alloyed steel, cast steel and tool steel. | Quenched & tempered :325 | 80-250 m/min |