ISO | Material | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
K | 15 | Grey cast iron (GG) | Pearlitic/ferritic | 180 HB | 655-1310 sfm |
K | 16 | Grey cast iron (GG) | Pearlitic/martensitic | 260 HB | 490-1150 sfm |
K | 19 | Malleable cast iron | Ferritic | 130 HB | 1150-1640 sfm |
K | 20 | Malleable cast iron | Pearlitic | 230 HB | 490-1310 sfm |
H | 38 | Hardened steel | Hardened | 55 HRC | 295-820 sfm |
H | 39 | Hardened steel | Hardened | 60 HRC | 295-820 sfm |
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