| ISO | Material | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
| P | 12 | Stainless steel and cast steel | Ferritic/martensitic | 200 HB | 165-310 sfm |
| P | 13 | Stainless steel and cast steel | Martensitic | 240 HB | 150-295 sfm |
| M | 14 | Stainless steel and cast steel | Austenitic, duplex | 180 HB | 115-260 sfm |
| N | 21 | Aluminum-wrought alloys | Not hardenable | 60 HB | 1195-3590 sfm |
| N | 22 | Aluminum-wrought alloys | Hardenable | 100 HB | 900-2905 sfm |
| N | 23 | Aluminum-cast alloys <=12% Si | Not hardenable | 75 HB | 900-2905 sfm |
| N | 24 | Aluminum-cast alloys <=12% Si | Hardenable | 90 HB | 600-1795 sfm |
| N | 25 | Aluminum-cast alloys >12% Si | High temperature | 130 HB | 600-1195 sfm |
| N | 26 | Copper alloys >1% Pb | Free cutting | 110 HB | 600-1195 sfm |
| N | 27 | Copper alloys | Brass | 90 HB | 450-900 sfm |
| N | 28 | Copper alloys | Electrolytic copper | 100 HB | 295-600 sfm |
| N | 29 | Non metallic. | Duro& fiber plastics | | 155-600 sfm |
| S | 31 | High temp. alloys Fe based | Annealed | 200 HB | 80-115 sfm |
| S | 32 | High temp. alloys Fe based | Hardened | 280 HB | 55-100 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 | 50-65 sfm |
| S | 35 | High temp. alloys. Ni or Co based | Cast | 320 HB | 50-65 sfm |
| S | 36 | Titanium (pure) | Pure | 190 HB | 295-375 sfm |
| S | 37 | Titanium alloys | Alpha+beta alloys, hardened | 310 HB | 65-150 sfm |