| 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 |
| M | 12 | Stainless steel and cast steel. | Ferritic/martensitic | 200 HB | 90-130 m/min |
| M | 13 | Stainless steel and cast steel. | Martensitic | 240 HB | 85-125 m/min |
| M | 14 | Stainless steel and cast steel. | Austenitic | 180 HB | 75-120 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 |
| N | 21 | Aluminum-wrought alloy. | Not cureable | 60 HB | 80-230 m/min |
| N | 22 | Aluminum-wrought alloy. | Cured | 100 HB | 80-200 m/min |
| N | 23 | Aluminum-cast, alloyed <12% Si. | Not cureable | 75 HB | 100-275 m/min |
| N | 24 | Aluminum-cast, alloyed. | Cured | 90 HB | 100-240 m/min |
| N | 25 | Aluminum-cast, alloyed >12% Si. | High temperature | 130 HB | 75-215 m/min |
| N | 26 | Copper alloys >1% pb. | Free cutting | 110 HB | 100-275 m/min |
| N | 27 | Copper alloys. | Brass | 90 HB | 100-275 m/min |
| N | 28 | Copper alloys. | Electrolitic copper | 100 HB | 100-275 m/min |
| N | 29 | Non metallic. | Duro& fiber plastics | 60 HB | 70-285 m/min |
| N | 30 | Non metallic | Hard rubber | 55 HB | 65-265 m/min |
| S | 31 | High temp. alloys Fe based. | Annealed | 200 HB | 20-50 m/min |
| S | 32 | High temp. alloys Fe based. | Cured | 280 HB | 20-45 m/min |
| S | 33 | High temp. alloys. Ni or Co based. | Annealed | 250 HB | 20-35 m/min |
| S | 34 | High temp. alloys. Ni or Co based. | Cured | 350 HB | 15-30 m/min |
| S | 35 | High temp. alloys. Ni or Co based. | Cast | 320 HB | 20-35 m/min |
| S | 36 | Titanium Ti alloys. | | 310 HB | 25-65 m/min |
| S | 37 | Titanium Ti alloys. | Alpha+beta alloys cu | 310 HB | 20-55 m/min |
| H | 38 | Hardened steel. | Hardened | 55 HRC | 25-60 m/min |
| H | 39 | Hardened steel. | Hardened | 60 HRC | 20-40 m/min |
| H | 40 | Chilled cast iron. | Cast | 400 HB | 25-60 m/min |
| H | 41 | Cast iron. | Hardened | 55 HRC | 20-50 m/min |