Bordo HSS Cobalt TiAlN Coated Red Band Jobber Drill Bit

• 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.

About UX Point

• The notched UX point provides self centering, easier penetration, improved hole accuracy and improved load distribution.
• The special notch geometry gives a corrected rake angle of 15° which provides a strong point for harder materials, as well as preventing snatching with materials such as Aluminium, Brass, Bronze and Plastics.

About Drill Bit Surface Treatment

• Violet / Grey (Titanium Aluminium Nitride - TiAlN) A violet/grey finish with a higher hardness than both TiN and TiCN coating utilises aluminium in the coating which imparts greater oxidation stability. This stability is a result of a very thin film (of Aluminium Oxide) which is formed on the surface of the TiAlN.
• This film is self repairing which leads to increased tool service life.
• This high performance coating is able to withstand much higher temperatures which allows increased speeds and feeds and semi-dry machining operations.
• TiAlN coating is especially useful when machining cast iron and tough steels.