| ISO | Material | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
| N | 21 | Aluminum-wrought alloys | Not hardenable | 60 HB | 3280-8200 sfm |
| N | 22 | Aluminum-wrought alloys | Hardenable | 100 HB | 985-3280 sfm |
| N | 23 | Aluminum-cast alloys <=12% Si | Not hardenable | 75 HB | 985-3280 sfm |
| N | 24 | Aluminum-cast alloys <=12% Si | Hardenable | 90 HB | 655-1970 sfm |
| N | 26 | Copper alloys >1% Pb | Free cutting | 110 HB | 820-1970 sfm |
| N | 27 | Copper alloys | Brass | 90 HB | 590-1310 sfm |
| N | 28 | Copper alloys | Electrolytic copper | 100 HB | 490-985 sfm |
| S | 31 | High temp. alloys Fe based | Annealed | 200 HB | 130-180 sfm |
| S | 32 | High temp. alloys Fe based | Hardened | 280 HB | 100-150 sfm |
| S | 33 | High temp. alloys Ni or Co based | Annealed | 250 HB | 100-130 sfm |
| S | 34 | High temp. alloys. Ni or Co based | Hardened | 350 HB | 65-100 sfm |
| S | 35 | High temp. alloys. Ni or Co based | Cast | 320 HB | 80-115 sfm |
| S | 36 | Titanium (pure) | Pure | 190 HB | 395-525 sfm |
| S | 37 | Titanium alloys | Alpha+beta alloys, hardened | 310 HB | 165-180 sfm |