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.
(0 reviews)
Add to Quote
This product has multiple variants. The options may be chosen on the product page
Bordo Metric Red Band HSS-Co TiAlN Coated Twist Drills for Tough Treatable Steel.
DIN338
130° UX point with two helical parabolic flutes with 33 degrees of helix angle.
The mechanical properties of materials are influenced diversely by the addition of alloying elements and heat treatment processes, resulting in some high-strength, quenched and tempered steels or hardened steels.
This range has its own unique set of machining requirements which are satisfied by the Red Band – Tough Treatable Steel – Series.
TiAlN coating increases tool surface hardness to 87Rc.
For machining materials with Hardness < 470 HB : Tensile Strength <1500 N/mm2.
(0 reviews)
Add to Quote
This product has multiple variants. The options may be chosen on the product page
Bordo Metric Yellow Band HSS Twist Drills for Aluminium and its alloys.
DIN338
130° web thinned point with two helical flutes with 35 degrees of helix angle.
The alloying elements which achieve varying Aluminium Alloys have an effect on the machining properties of these materials.
This generally creates a difficult long chip formation and material which has tendencies to stick to the tool, placing a unique set of demands on tooling. Yellow Band Series contends with these difficulties.
For machining materials with Hardness < 200 HB : Tensile Strength <700 N/mm2.
(0 reviews)
Add to Quote
This product has multiple variants. The options may be chosen on the product page