Swiss engineering, high precision

MTB4400060

90° solid carbide micro centre drill for precision pre-drilling, coated

d1+/-0.03d2h6l1+/-0.2
0.62.028.0
CoatingYes
Coolant holesNo
Point angle90°
Helix angle25°
Flutes2
StandardTUSA
MaterialDescriptionMachinabilityVcm/minfnmm/rev
P.0Long chipping Low Carbon SteelsRecommended20-350.010-0.03
P.1Short chipping Low Carbon SteelsRecommended20-350.010-0.03
P.2Medium and High Carbon SteelsRecommended20-350.010-0.03
P.3Alloy Steels, Tool Steels (N/mm² 600-850)Recommended15-300.01-0.025
P.4Alloy Steels, Tool Steels (N/mm² 850-1400)Recommended12-250.01-0.02
P.5Ferritic, Martensitic, PH SSRecommended10-200.01-0.02
P.6High Strength Ferritic, Martensitic, PH SSRecommended10-200.01-0.02
M.1Austenitic Stainless SteelRecommended8-160.01-0.02
M.2High Strength Austenitic SS, Cast SSRecommended8-160.01-0.02
M.3Duplex SSRecommended8-160.01-0.02
K.1Grey Cast IronPartially recommended20-350.01-0.035
K.2Low and Medium Strength CGI, Ductile IronsPartially recommended15-300.01-0.03
K.3High Strength Ductile and Austempered Ductile IronPartially recommended15-300.01-0.03
N.1Wrought AluminiumRecommended35-500.02-0.04
N.2Low Si Al Alloys and Magnesium Alloys Si<12%Recommended25-400.02-0.05
N.3High Si Al Alloys Si>12%Recommended20-350.02-0.04
N.4Copper, Brass, Zinc Based AlloysRecommended20-500.01-0.05
S.1Iron Based HRSARecommended10-150.01-0.02
S.2Co Based HRSARecommended10-150.01-0.02
S.3Ni Based HRSARecommended10-150.01-0.02
S.4Ti and Ti AlloysRecommended25-350.01-0.03
H.1Hardened Materials (HRC 44-48)Recommended10-150.01-0.02
H.2Hardened Materials (HRC 48-55)Recommended10-150.01-0.02
H.3Hardened Materials (HRC 56-60)Partially recommended20-400.001 -0.004
O.1Thermoplastic and thermosetting materialsRecommended20-350.02-0.05
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