Bordo Metric Blue Band HSS-Co TiAlN Coated Twist Drills for Stainless Steel.
DIN338
Multi-faceted point with two helical flutes with 35 degrees of helix angle.
The machining of stainless steels is difficult due to its work hardening properties, toughness and poor thermal conductivity, which places high demands on the cutting tools.
The Blue Band – Stainless Steel – Series has been specifically designed to suit these difficult machining requirements.
TiAlN coating increases tool surface hardness to 87Rc.
For machining materials with Hardness < 350 HB : Tensile Strength <1250 N/mm2.
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1/4″ hex shank facilitates fast tool loading in cordless impact drivers and quick change adaptors.
One piece solid core design is significantly more durable than the conventional two piece design that utilises a hex sleeve on a standard round drill bit.
135° split point delivers a precision start and prevents bit wander for fast, accurate holes.
Premium quality M2 HSS ensures extreme performance and long bit life.
Bordo Impact Bits are designed and manufactured for optimum performance in modern impact drivers.
Not only do they offer significantly increased bit life in impact applications but they also offer exceptional performance in standard driving usage.
The impact driver action places high peak torque demands on both insert and power bits.
Our range features a uniquely engineered torsion zone with multi-stage hardening and tempering to dissipate damaging peak loads.
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Chisel point is suitable for general purpose drilling.
Black Finish Twist Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating.
This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life.
Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.
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