Material GroupsTensileHardnessMaterialRecommendedMaS Feed chinUMO vs. Dr 1.9 ingCHA ill Di 3.9 ConM amet 5.9 ditier 9.9 ons5.92.9
O MaterialConditionStrength [N/mm2]HBNo.(1)V m/minD=4-4.9D=5-5.9D=6-7.9D=8-9.9D=10-1D=12-1D=14-1D=16-1D=20-2D=26-3
ISmm/rev
< 0.25 %CAnnealed420125180-110-140
Non-alloy ≥ 0.25 %CAnnealed650190280-105-130
steel and cast steel free < 0.55 %CQuenched and tempered850250380-100-1200.04 0.060.07 0.090.09 0.110.12 0.170.15 0.210.18 0.24 0.20 0.270.25 0.350.25 0.350.30 0.40
, cutting steelAnnealed750220470-90-1100.080.110.130.220.280.300.350.450.450.50
≥ 0.55 %CQuenched and tempered1000300550-70-90
Annealed600200680-100-120
P Low alloy and cast930275770-90-1100.040.070.090.120.140.160.180.230.250.30
steel (less than 5% ofQuenched and1000300850-70-900.060.090.120.180.210.24 0.260.310.350.40
alloying elements)tempered1200350940-55-700.080.110.150.250.280.320.350.400.450.50
High alloyed steel castAnnealed6802001050-70-900.060.070.090.120.120.150.180.200.220.25
, steel and tool steelQuenched and tempered11003251140-60-800.07 0.080.09 0.100.11 0.120.16 0.200.17 0.220.2 0.250.23 0.280.25 0.300.27 0.330.30 0.35
Stainless steel and cast steelFerritic/ martensitic6802001240-55-700.05 0.060.06 0.070.08 0.100.11 0.150.11 0.160.14 0.19 0.17 0.220.22 0.240.21 0.260.24 0.29
Martensitic820240130.070.080.110.190.210.240.270.290.320.34
Gray cast iron (GG)Ferritic / pearlitic1801590-125-160
Pearlitic /
martensitic2601680-110-1400.040.100.120.150.200.250.300.350.350.40
KFerritic1601790-135-1800.060.130.150.220.270.32 0.370.450.470.50
Nodular cast iron (GGG)0.080.150.180.300.350.400.450.550.600.60
Pearlitic2501880-110-140
Malleable cast ironFerritic1301990-125-160
Pearlitic2302080-110-140

Recommended cutting data (1) For workpiece materials list, see pages 495-524 . 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

  • When using external coolant supply only, reduce cutting speed by 10%
  • When using more than 5XD drill ratio, reduce cutting parameters by 10%

No need to reduce the cutting parameters while using 8XD and up holders