| 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 | 100-200 m/min |
| P | 11 | High alloyed steel, cast steel and tool steel. | Quenched & tempered :325 | 100-200 m/min |
| K | 15 | Grey cast iron (GG) | Pearlitic/ferritic :180 | 100-300 m/min |
| K | 16 | Grey cast iron (GG) | Pearlitic/martensiti :260 | 100-300 m/min |
| K | 17 | Nodular cast iron (GGG) | Ferritic :160 | 80-200 m/min |
| K | 18 | Nodular cast iron (GGG) | Pearlitic :250 | 80-200 m/min |
| K | 19 | Malleable cast iron. | Ferritic :130 | 80-200 m/min |
| K | 20 | Malleable cast iron. | Pearlitic :230 | 80-200 m/min |
| S | 31 | High temp. alloys Fe based. | Annealed :200 | 20-60 m/min |
| S | 32 | High temp. alloys Fe based. | Cured :280 | 20-60 m/min |
| S | 33 | High temp. alloys. Ni or Co based. | Annealed :250 | 20-60 m/min |
| S | 34 | High temp. alloys. Ni or Co based. | Cured :350 | 20-60 m/min |
| S | 35 | High temp. alloys. Ni or Co based. | Castr :320 | 20-60 m/min |
| H | 38 | Hardened steel. | Hardened :560 | 30-150 m/min |
| H | 39 | Hardened steel. | Hardened :654 | 30-70 m/min |
| H | 40 | Chilled cast iron. | Cast :400 | 30-150 m/min |
| H | 41 | Cast iron. | Hardened :560 | 30-150 m/min |