
| Bill | group | HC (CVD) Starting | HC values for cutting speed v | (PVD) c [m/min] | ||||
| Material group | Composition / structur | e / heat treatment | rne hardness | ing | ||||
| HB | Machin | YBC252 | YBG105 | YB9320 | ||||
| approx. 0,15 % C | annealed | 125 | 1 | 190 | 200 | 190 | ||
| approx. 0,45 % C | annealed | 190 | 2 | 175 | 180 | 175 | ||
| Unalloyed steel | approx. 0,45 % C | tempered | 250 | 3 | 145 | 150 | 145 | |
| approx. 0,75 % C | annealed | 270 | 4 | 140 | 145 | 140 | ||
| approx. 0,75 % C | tempered | 300 | 5 | 135 | 140 | 135 | ||
| P | annealed | 180 | 6 | 170 | 180 | 170 | ||
| Low-alloed steel | tempered | 275 | 7 | 125 | 130 | 125 | ||
| y | tempered | 300 | 8 | 115 | 120 | 115 | ||
| tempered | 350 | 9 | 105 | 110 | 105 | |||
| High-alloyed steel and high-alloyed | annealed | 200 | 10 | 125 | 130 | 125 | ||
| tool steel | hardened and tempere | 325 d | 11 | 95 | 100 | 95 | ||
| ferritic/martensitic | annealed | 200 | 12 | 165 | 170 | 165 | ||
| martensitic | tempered | 240 | 13 | 135 | 140 | 135 | ||
| M | Stainless steel | austenitic | quench hardened | 180 | 14 | 155 | 160 | 155 |
| austenitic-ferritic | 230 | 15 | 135 | 140 | 135 | |||
| Gre cast iron | perlitic/ferritic | 180 | 16 | 240 | 250 | 240 | ||
| y | perlitic (martensitic) | 260 | 17 | 185 | 190 | 185 | ||
| K | Cast iron with sheroidal rahite | ferritic | 160 | 18 | 220 | 230 | 220 | |
| p gp | perlitic | 250 | 19 | 165 | 170 | 165 | ||
| Mllbl t i | ferritic | 130 | 20 | 175 | 180 | 175 | ||
| aeae cas ron | perlitic | 230 | 21 | 165 | 170 | 165 | ||
| Aluminium wrought alloys | cannot be hardened | 60 | 22 | |||||
| hardenable | hardened | 100 | 23 | |||||
| ≤ 12 % Si, cannot be hardened | 75 | 24 | ||||||
| N | Cast aluminium alloys | ≤ 12 % Si, hardenable | hardened | 90 | 25 | |||
| > 12 % Si, cannot be hardened | 130 | 26 | ||||||
| machining steel, PB> 1% | 110 | 27 | ||||||
| Copper and copper alloys (bronze/brass) | CuZn, CuSnZn | 90 | 28 | |||||
| CuSn, Pb-free copper, electrolyti | c copper | 100 | 29 | |||||
| bd ll | annealed | 200 | 30 | 100 | 95 | |||
| Fe-ase aoys | hardened | 280 | 31 | 50 | 50 | |||
| Heat-resistant alloys | annealed | 250 | 32 | 80 | 80 | |||
| S | Ni or Co bass | hardened | 350 | 33 | 70 | 70 | ||
| cast | 320 | 34 | 70 | 70 | ||||
| Tii ll | pure titanium | Rm400 | 35 | 150 | 145 | |||
| tanum aoys | α and β alloys | hardened | Rm1050 | 36 | 50 | 50 | ||
| Hdd tl | hardened and tempere | 55 HRC d | 37 | |||||
| arene see | hardened and tempere | 60 HRC d | 38 | |||||
| H | Hard cast iron | cast | 400 | 39 | ||||
| Hardened cast iron | hardened and tempere | 55 HRC d | 40 | |||||
| Thermoplasts | 41 | |||||||
| Thermosetting plastics | 42 | |||||||
| X | Non-metallic materials | Plastic, glass-fibre reinforced GF | i RP | 43 | ||||
| Plastic, carbon fibre reinforced C | i FRP | 44 | ||||||
| Graphite Wood | 45 46 |
Note: The given cutting values are guide values, which were determined under ideal conditions. The values have to be adapted in individual cases. For examples of material for cutting tool groups view page D22.