| ISO | Materials | Material Designation | Material Condition | Cutting Speed Recommendations (Vc) |
| S | 33 | High temp. alloys. Ni or Co based. | Annealed :250 | 80-500 m/min |
| S | 34 | High temp. alloys. Ni or Co based. | Cured :350 | 80-500 m/min |
| S | 35 | High temp. alloys. Ni or Co based. | Castr :320 | 80-500 m/min |