| ISO | Workpiece Material Group | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
| P | 1 | Non-alloy steel and cast steel, free cutting steel <0.25%C. | Annealed | 125 HB | 80-160 m/min |
| P | 2 | Non-alloy steel and cast steel, free cutting steel >=0.25%C. | Annealed | 190 HB | 80-155 m/min |
| P | 3 | Non-alloy steel and cast steel, free cutting steel <0.55%C. | Quench and tempered. | 250 HB | 75-150 m/min |
| P | 4 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Annealed | 220 HB | 75-145 m/min |
| P | 5 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Quenched & tempered. | 300 HB | 75-135 m/min |
| P | 6 | Low alloy & cast steel (less than 5% of alloying elements). | Annealed | 200 HB | 90-130 m/min |
| P | 7 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered | 275 HB | 90-125 m/min |
| P | 8 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered | 300 HB | 85-120 m/min |
| P | 9 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered | 350 HB | 75-115 m/min |
| P | 10 | High alloyed steel, cast steel and tool steel. | Annealed | 200 HB | 70-125 m/min |
| P | 11 | High alloyed steel, cast steel and tool steel. | Quenched & tempered | 325 HB | 65-115 m/min |
| K | 15 | Grey cast iron (GG) | Pearlitic/ferritic | 180 HB | 55-110 m/min |
| K | 16 | Grey cast iron (GG) | Pearlitic/martensiti | 260 HB | 55-95 m/min |
| K | 17 | Nodular cast iron (GGG) | Ferritic | 160 HB | 55-110 m/min |
| K | 18 | Nodular cast iron (GGG) | Pearlitic | 250 HB | 50-90 m/min |
| K | 19 | Malleable cast iron. | Ferritic | 130 HB | 55-110 m/min |
| K | 20 | Malleable cast iron. | Pearlitic | 230 HB | 50-100 m/min |