| 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 | 260-280 m/min |
| P | 2 | Non-alloy steel and cast steel, free cutting steel >=0.25%C. | Annealed | 190 HB | 200-230 m/min |
| P | 3 | Non-alloy steel and cast steel, free cutting steel <0.55%C. | Quench and tempered. | 250 HB | 160-220 m/min |
| P | 4 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Annealed | 220 HB | 160-220 m/min |
| P | 5 | Non-alloy steel and cast steel, free cutting steel >=0.55%C. | Quenched & tempered. | 300 HB | 140-180 m/min |
| P | 6 | Low alloy & cast steel (less than 5% of alloying elements). | Annealed | 200 HB | 160-220 m/min |
| P | 7 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered | 275 HB | 120-180 m/min |
| P | 8 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered | 300 HB | 130-180 m/min |
| P | 9 | Low alloy & cast steel (less than 5% of alloying elements). | Quenched & tempered | 350 HB | 140-180 m/min |
| P | 10 | High alloyed steel, cast steel and tool steel. | Annealed | 200 HB | 130-180 m/min |
| P | 11 | High alloyed steel, cast steel and tool steel. | Quenched & tempered | 325 HB | 70-120 m/min |
| M | 12 | Stainless steel and cast steel. | Ferritic/martensitic | 200 HB | 80-160 m/min |
| M | 13 | Stainless steel and cast steel. | Martensitic | 240 HB | 60-150 m/min |
| M | 14 | Stainless steel and cast steel. | Austenitic | 180 HB | 60-120 m/min |
| K | 15 | Grey cast iron (GG) | Pearlitic/ferritic | 180 HB | 80-260 m/min |
| K | 16 | Grey cast iron (GG) | Pearlitic/martensiti | 260 HB | 130-240 m/min |
| K | 17 | Nodular cast iron (GGG) | Ferritic | 160 HB | 150-270 m/min |
| K | 18 | Nodular cast iron (GGG) | Pearlitic | 250 HB | 90-270 m/min |
| K | 19 | Malleable cast iron. | Ferritic | 130 HB | 150-270 m/min |
| K | 20 | Malleable cast iron. | Pearlitic | 230 HB | 140-240 m/min |
| S | 31 | High temp. alloys Fe based. | Annealed | 200 HB | 20-40 m/min |
| S | 32 | High temp. alloys Fe based. | Cured | 280 HB | 20-30 m/min |
| S | 33 | High temp. alloys. Ni or Co based. | Annealed | 250 HB | 20-30 m/min |
| S | 34 | High temp. alloys. Ni or Co based. | Cured | 350 HB | 20-30 m/min |
| S | 35 | High temp. alloys. Ni or Co based. | Cast | 320 HB | 30-70 m/min |
| S | 36 | Titanium Ti alloys. | | 310 HB | 30-70 m/min |
| S | 37 | Titanium Ti alloys. | Alpha+beta alloys cu | 310 HB | 30-70 m/min |
| H | 40 | Chilled cast iron. | Cast | 400 HB | 60-80 m/min |
| H | 41 | Cast iron. | Hardened | 55 HRC | 30-50 m/min |