| ISO | Material | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
| K | 15 | Grey cast iron (GG) | Pearlitic/ferritic | 180 HB | 100-140 m/min |
| K | 16 | Grey cast iron (GG) | Pearlitic/martensitic | 260 HB | 90-130 m/min |
| K | 17 | Nodular cast iron (GGG) | Ferritic | 160 HB | 110-150 m/min |
| K | 18 | Nodular cast iron (GGG) | Pearlitic | 250 HB | 90-130 m/min |
| K | 19 | Malleable cast iron | Ferritic | 130 HB | 100-140 m/min |
| K | 20 | Malleable cast iron | Pearlitic | 230 HB | 90-130 m/min |
| N | 21 | Aluminum-wrought alloys | Not hardenable | 60 HB | 600-800 m/min |
| N | 22 | Aluminum-wrought alloys | Hardenable | 100 HB | 500-700 m/min |
| N | 23 | Aluminum-cast alloys <=12% Si | Not hardenable | 75 HB | 600-800 m/min |
| N | 24 | Aluminum-cast alloys <=12% Si | Hardenable | 90 HB | 500-700 m/min |
| N | 25 | Aluminum-cast alloys >12% Si | High temperature | 130 HB | 300-400 m/min |
| N | 26 | Copper alloys >1% Pb | Free cutting | 110 HB | 300-400 m/min |
| N | 27 | Copper alloys | Brass | 90 HB | 300-400 m/min |
| N | 28 | Copper alloys | Electrolytic copper | 100 HB | 200-300 m/min |
| S | 31 | High temp. alloys Fe based | Annealed | 200 HB | 50-60 m/min |
| S | 32 | High temp. alloys Fe based | Hardened | 280 HB | 40-45 m/min |
| S | 33 | High temp. alloys Ni or Co based | Annealed | 250 HB | 50-55 m/min |
| S | 34 | High temp. alloys. Ni or Co based | Hardened | 350 HB | 30-35 m/min |
| S | 35 | High temp. alloys. Ni or Co based | Cast | 320 HB | 40-45 m/min |
| S | 36 | Titanium (pure) | Pure | 190 HB | 105-125 m/min |
| S | 37 | Titanium alloys | Alpha+beta alloys, hardened | 310 HB | 45-55 m/min |
| H | 38 | Hardened steel | Hardened | 55 HRC | 10-10 m/min |
| H | 39 | Hardened steel | Hardened | 60 HRC | 5-10 m/min |
| H | 40 | Chilled cast iron | Cast | 400 HB | 15-25 m/min |
| H | 41 | Cast iron | Hardened | 55 HRC | 10-10 m/min |