| 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 | 100-300 m/min |
| P | 2 | Non-alloy steel and cast steel, free cutting steel >=0.25%C. | Annealed :190 | 100-300 m/min |
| P | 3 | Non-alloy steel and cast steel, free cutting steel <0.55%C. | Quench and tempered. :250 | 100-300 m/min |
| P | 4 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Annealed :220 | 100-300 m/min |
| P | 5 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Quenched & tempered. :300 | 100-300 m/min |
| P | 6 | Low alloy & cast steel (less than 5% of alloying elements). | Annealed :200 | 100-300 m/min |
| P | 7 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :275 | 100-300 m/min |
| P | 8 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :300 | 100-300 m/min |
| P | 9 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :350 | 100-300 m/min |
| P | 10 | High alloyed steel, cast steel and tool steel. | Annealed :200 | 100-300 m/min |
| P | 11 | High alloyed steel, cast steel and tool steel. | Quenched & tempered :325 | 100-300 m/min |
| H | 38 | Hardened steel. | Hardened :560 | 80-130 m/min |
| H | 39 | Hardened steel. | Hardened :654 | 50-100 m/min |
| H | 40 | Chilled cast iron. | Cast :400 | 80-130 m/min |
| H | 41 | Cast iron. | Hardened :560 | 80-130 m/min |