Spiralborr Dormer A17017.5

Standard right hand spiral
Ideal for a wide range of materials where chuck holding capacity is limited
Shank diameter enables drill to be used in ½ inch chuck
Suitable for both hand and machine use
Supplied in steam tempered finish for increased wear resistance

Machining steel soft steel (<120 HB <400 N/mm²)
Construction steel carburised steel (<200 HB <700 N/mm²)
Carbon steel (<250 HB <850 N/mm²)
Alloyed steel (<250 HB <850 N/mm²)
alloy steel hardened and tempered steel (>250<350 HB >850<1200 N/mm²)
alloy steel hardened and tempered steel (> 350 HB >1200<1620 N/mm²)
stainless machining steel (<250 HB <850 N/mm²)
stainless steel - austenitic (<320 HB <1100 N/mm²)
stainless steel - Ferritic + Austenitic Martensitic (<300 HB <1000 N/mm²)
Cast Iron lamellar (<150 HB >500 N/mm ²)
Cast iron lamellar (>150<300 HB >500<1000 N/mm²)
Ductile cast iron/malleable cast iron (<200 HB <700 N/mm²)
Ductile cast iron/malleable cast iron (>200<300 HB >700<1000 N/mm²)
Titanium non-alloyed (<200 HB <700 N/mm²)
Titanium alloyed (<270 HB <900 N/mm²)
Titanium alloy (>270<350 HB >900<1250 N/mm²)
nickel non-alloyed (<200 HB <700 N/mm²)
nickel alloy (<270 HB >900 N/mm²)
nickel non-alloyed (<200 HB <700 N/mm²)
Copper (<100 HB <350 N/mm²)
Béta-Brass Bronze (<200 HB <700 N/mm²)
Alfa-Brass (<200 HB <700 N/mm²)
Extra-strong bronze (<470 HB <1500 N/mm²)
aluminium magnesium non-alloyed (<100 HB <350 N/mm²)
aluminium alloyed Silicon 0.5% (<150 HB <500 N/mm²)
aluminium alloyed Silicon > 0.5% <10% (<120 HB <400 N/mm²)
aluminium alloyed Silicon >10% whisker reinforced aluminium-alloys magnesium-alloys (<120 HB <400 N/mm²)
Thermoplastics
Duraplastics
Reinforced plastic materials
Cermets (<550 HB <170 N/mm²)