ISO MaterialConditionTensile Strength [N/mm2]Hardness HBMaterial No.Cutting Speed Vc m/minD=6.8-10.9D=11-12.9Feed vs. D D=13-14.9rill Diamet D=15-16.9er mm/rev D=17-20.9D=21-25.9
< 0.25 %CAnnealed420125150-130
Non-alloy ≥ 0.25 %CAnnealed6501902100-120
steel and cast steel, < 0.55 %CQuenched and tempered850250390-1100.12-0.20.15-0.250.2-0.30.25-0.350.25-0.450.25-0.45
free cutting steel ≥ 0.55 %CAnnealed Quenched and tempered750 1000220 3004 590-120 70-90
Low alloy and castAnnealed600200680-130
P steel (less than 5% of alloying elements)Quenched and tempered930 1000 1200275 300 3507 8 970-110 60-90 40-700.12-0.20.15-0.250.2-0.30.25-0.350.3-0.40.3-0.45
High alloyed steel, cast steel and tool steelAnnealed Quenched and tempered680 1100200 32510 1150-80 40-700.12-0.20.12-0.220.15-0.250.2-0.280.25-0.330.25-0.35
Stainless steelFerritic/ martensitic6802001220-500.08-0.140.12-0.220.12-0.150.14-0.200.16-0.240.15-0.28
and cast steelMartensitic82024013
M Stainless steel and cast steelAustenitic, duplex6001801420-500.08-0.140.12-0.220.12-0.150.14-0.200.16-0.240.15-0.28
Ferritic /pearlitic1801590-140
Gray cast iron (GG)Pearlitic / martensitic2601680-1300.2-0.30.25-0.350.3-0.40.35-0.450.4-0.50.4-0.6
KFerritic16017100-180
Nodular cast iron (GGG)Pearlitic2501890-160
Ferritic13019
Malleable cast ironPearlitic23020
Aluminum-Not hardenable602190-160
wrought alloysHardenable1002280-1200.2-0.350.25-0.40.3-0.450.35-0.50.4-0.60.4-0.65
Aluminum- ≤12% SiNot hardenable752390-160
Hardenable9024
cast alloys
>12% SiHigh temperature13025
N >1% PbFree cutting11026
CopperBrass9027
alloysElectrolytic copper10028
Non metallicDuroplastics, fiberplastics29
Hard rubber30
Fe basedAnnealed2003130-50005-01008-01301-015012-018012-02012-022
HighHardened2803220-40............
temperatureAnnealed2503320-500.06-0.120.09-0.150.12-0.180.15-0.20.15-0.230.15-0.25
S alloys Ni or CoHardened35034
basedCast32035
Pure40036
Titanium alloysAlpha+beta alloys,hardened105037
Hardened55 HRC3820-500.06-0.120.09-0.150.12-0.180.15-0.20.15-0.230.15-0.25
H Hardened steelHardened60 HRC39
Chilled cast ironCast4004020-500.06-0.120.09-0.150.12-0.180.15-0.20.15-0.230.15-0.25
Cast ironHardened55 HRC41
  • When using external coolant supply only, reduce cutting speed by 10%
  • When using more than 5XD drill ratio, reduce cutting parameters by 10% As a starting value, the

middle of the recommended machining range should be used. Then, according to the wear results, conditions can be changed to optimize performance. The data refers to IC908. For IC1008, cutting speed should be increased by 15%.