| 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 | 80-300 m/min |
| P | 4 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Annealed :220 | 80-250 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 | 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 | 80-300 m/min |
| P | 9 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered :350 | 80-300 m/min |
| P | 10 | High alloyed steel, cast steel and tool steel. | Annealed :200 | 80-250 m/min |
| P | 11 | High alloyed steel, cast steel and tool steel. | Quenched & tempered :325 | 80-250 m/min |
| P | 12 | Stainless steel and cast steel. | Ferritic/martensitic :200 | 50-250 m/min |
| P | 13 | Stainless steel and cast steel. | Martensitic :240 | 50-250 m/min |
| M | 14 | Stainless steel and cast steel. | Austenitic :180 | 50-250 m/min |
| K | 15 | Grey cast iron (GG) | Pearlitic/ferritic :180 | 100-500 m/min |
| K | 16 | Grey cast iron (GG) | Pearlitic/martensiti :260 | 100-500 m/min |
| K | 17 | Nodular cast iron (GGG) | Ferritic :160 | 100-500 m/min |
| K | 18 | Nodular cast iron (GGG) | Pearlitic :250 | 100-500 m/min |
| K | 19 | Malleable cast iron. | Ferritic :130 | 100-500 m/min |
| K | 20 | Malleable cast iron. | Pearlitic :230 | 100-500 m/min |