Overview

• Cobalt is harder than high speed steel and provides better wear resistance
• It is commonly used on high tensile alloys
• Oxide/gold finish provides a polished finish and prevents chip building, galling and welding on a workpiece
• It is commonly used on low carbon, stainless steel and ferrous metals
• Regular, also known as medium spiral bits, are used in general purpose applications
• They are used on soft, nonferrous materials
• Spiral flutes are constructed with a higher flute angle to remove chips more easily.