| P.0 | Long chipping Low Carbon Steels | Recommended | 40-60 | 0.01-0.03 |
| P.1 | Short chipping Low Carbon Steels | Recommended | 40-60 | 0.01-0.03 |
| P.2 | Medium and High Carbon Steels | Recommended | 40-60 | 0.01-0.03 |
| P.3 | Alloy Steels, Tool Steels (N/mm² 600-850) | Partially recommended | 30-50 | 0.01-0.02 |
| P.5 | Ferritic, Martensitic, PH SS | Partially recommended | 15-30 | 0.003-0.01 |
| P.6 | High Strength Ferritic, Martensitic, PH SS | Partially recommended | 15-30 | 0.003-0.01 |
| M.1 | Austenitic Stainless Steel | Partially recommended | 15-30 | 0.003-0.01 |
| M.2 | High Strength Austenitic SS, Cast SS | Partially recommended | 15-30 | 0.003-0.01 |
| M.3 | Duplex SS | Partially recommended | 15-30 | 0.003-0.01 |
| K.1 | Grey Cast Iron | Partially recommended | 30-50 | 0.01-0.02 |
| K.2 | Low and Medium Strength CGI, Ductile Irons | Partially recommended | 30-50 | 0.01-0.02 |
| K.3 | High Strength Ductile and Austempered Ductile Iron | Partially recommended | 30-50 | 0.01-0.02 |
| N.1 | Wrought Aluminium | Recommended | 60-100 | 0.015-0.040 |
| N.2 | Low Si Al Alloys and Magnesium Alloys Si<12% | Recommended | 60-100 | 0.015-0.040 |
| N.3 | High Si Al Alloys Si>12% | Recommended | 50-80 | 0.01-0.03 |
| N.4 | Copper, Brass, Zinc Based Alloys | Recommended | 30-70 | 0.01-0.03 |
| S.4 | Ti and Ti Alloys | Partially recommended | 30-50 | 0.005-0.01 |
| O.1 | Thermoplastic and thermosetting materials | Recommended | 60-100 | 0.015-0.040 |
