| ISO | Material | 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 | 395-600 sfm |
| P | 2 | Non-alloy steel and cast steel, free cutting steel >=0.25%C. | Annealed | 190 HB | 295-475 sfm |
| P | 3 | Non-alloy steel and cast steel, free cutting steel <0.55% C | Quenched and tempered | 250 HB | 240-400 sfm |
| P | 4 | Non-alloy steel and cast steel, free cutting steel >=0.55% C | Annealed | 220 HB | 270-485 sfm |
| P | 5 | Non-alloy steel and cast steel, free cutting steel >=0.55% C | Quenched and tempered. | 300 HB | 245-435 sfm |
| P | 6 | Low alloy and cast steel (less than 5% of alloying elements) | Annealed | 200 HB | 260-435 sfm |
| P | 7 | Low alloy and cast steel (less than 5% of alloying elements) | Quenched and tempered | 275 HB | 255-435 sfm |
| P | 8 | Low alloy and cast steel (less than 5% of alloying elements) | Quenched and tempered | 300 HB | 230-375 sfm |
| P | 9 | Low alloy and cast steel (less than 5% of alloying elements) | Quenched and tempered | 350 HB | 230-375 sfm |
| P | 10 | High alloyed steel, cast steel and tool steel | Annealed | 200 HB | 260-400 sfm |
| P | 11 | High alloyed steel, cast steel and tool steel | Quenched and tempered | 325 HB | 195-335 sfm |
| P | 12 | Stainless steel and cast steel | Ferritic/martensitic | 200 HB | 230-525 sfm |
| P | 13 | Stainless steel and cast steel | Martensitic | 240 HB | 205-485 sfm |
| M | 14 | Stainless steel and cast steel | Austenitic, duplex | 180 HB | 180-460 sfm |
| K | 15 | Grey cast iron (GG) | Pearlitic/ferritic | 180 HB | 360-605 sfm |
| K | 16 | Grey cast iron (GG) | Pearlitic/martensitic | 260 HB | 295-460 sfm |
| K | 17 | Nodular cast iron (GGG) | Ferritic | 160 HB | 330-625 sfm |
| K | 18 | Nodular cast iron (GGG) | Pearlitic | 250 HB | 280-460 sfm |
| K | 19 | Malleable cast iron | Ferritic | 130 HB | 395-655 sfm |
| K | 20 | Malleable cast iron | Pearlitic | 230 HB | 330-525 sfm |
| N | 21 | Aluminum-wrought alloys | Not hardenable | 60 HB | 395-490 sfm |
| N | 22 | Aluminum-wrought alloys | Hardenable | 100 HB | 395-490 sfm |
| N | 23 | Aluminum-cast alloys <=12% Si | Not hardenable | 75 HB | 395-490 sfm |
| N | 24 | Aluminum-cast alloys <=12% Si | Hardenable | 90 HB | 395-490 sfm |
| N | 25 | Aluminum-cast alloys >12% Si | High temperature | 130 HB | 395-490 sfm |
| S | 31 | High temp. alloys Fe based | Annealed | 200 HB | 80-150 sfm |
| S | 32 | High temp. alloys Fe based | Hardened | 280 HB | 55-105 sfm |
| S | 33 | High temp. alloys Ni or Co based | Annealed | 250 HB | 55-80 sfm |
| S | 34 | High temp. alloys. Ni or Co based | Hardened | 350 HB | 55-75 sfm |
| S | 35 | High temp. alloys. Ni or Co based | Cast | 320 HB | 55-70 sfm |
| S | 36 | Titanium (pure) | Pure | 190 HB | 295-415 sfm |
| S | 37 | Titanium alloys | Alpha+beta alloys, hardened | 310 HB | 85-185 sfm |
| H | 38 | Hardened steel | Hardened | 55 HRC | 80-115 sfm |
| H | 39 | Hardened steel | Hardened | 60 HRC | 75-110 sfm |
| H | 40 | Chilled cast iron | Cast | 400 HB | 80-115 sfm |
| H | 41 | Cast iron | Hardened | 55 HRC | 85-120 sfm |