| ISO | Material | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
| S | 31 | High temp. alloys Fe based | Annealed | 200 HB | 100-130 sfm |
| S | 32 | High temp. alloys Fe based | Hardened | 280 HB | 80-100 sfm |
| S | 33 | High temp. alloys Ni or Co based | Annealed | 250 HB | 65-100 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 | 330-425 sfm |
| S | 37 | Titanium alloys | Alpha+beta alloys, hardened | 310 HB | 65-165 sfm |