| ISO | Material | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
| S | 31 | High temp. alloys Fe based | Annealed | 200 HB | 45-70 m/min |
| S | 32 | High temp. alloys Fe based | Hardened | 280 HB | 30-45 m/min |
| S | 33 | High temp. alloys Ni or Co based | Annealed | 250 HB | 35-45 m/min |
| S | 34 | High temp. alloys. Ni or Co based | Hardened | 350 HB | 30-40 m/min |
| S | 35 | High temp. alloys. Ni or Co based | Cast | 320 HB | 25-35 m/min |
| S | 36 | Titanium (pure) | Pure | 190 HB | 110-190 m/min |
| S | 37 | Titanium alloys | Alpha+beta alloys, hardened | 310 HB | 45-75 m/min |
| H | 38 | Hardened steel | Hardened | 55 HRC | 30-40 m/min |
| H | 39 | Hardened steel | Hardened | 60 HRC | 25-35 m/min |
| H | 40 | Chilled cast iron | Cast | 400 HB | 40-60 m/min |
| H | 41 | Cast iron | Hardened | 55 HRC | 35-45 m/min |