Bordo HSS Cobalt TiAlN Coated Blue Band Stub Drill Bit - 2051

• DIN1897.
• HSS Cobalt TiAlN Coated Blue Band Stub Drill.
• Bordo Metric Blue Band HSS-Co TiAlN Coated Stub Drills for Stainless Steel.
• 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.
• They are designed primarily for machining operations in lathes (screw machines) but can also be used in manual hand held drills.
• 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.
• The multi faceted point was specifically developed to enable higher load carrying capacity and to enhance feed rates during the machining of difficult materials such as stainless steel.

About Drill Bit Surface Treatment

Violet / Grey - TiAlN (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.

About Stainless Steel Blue Band

• 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 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.