Irwin 10502585 Hss Pro Tin Coated Drill Bit 4.5mm
The Irwin HSS Pro titanium drill bits are primarily designed fordrilling metal and harder, tougher alloys. Compared to traditionalHSS Twist Drill Bits speed can be increased by 40 -60% and feed by10 -20% without reducing the life time of the drill bitsignificantly.
?TiN is also a poor conductor of heat, so the heat generatedduring the drilling process is diverted into the chips and coolantand less into the drill bit.
These drills have a 135 split point grinding tip which ensuresperfect centring and reduced drilling pressure.
The drill bit body is manufactured from high quality HSS steelcoated with 2.5 Titanium Nitride (TiN), the TiN coating has ahardness of app. 80 HRC and is very resistant to wear. TiN has alow coefficient of friction, this results in less power beingconsumed and less heat generated during the drilling.
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