WHAT IS TiN COATING?
From the git-go: TiN COATING HAS NOTHING TO DO WITH THE ELEMENT TIN. There is no tin involved. There is more confusion over this designation than any other in the world of tools. Simply put: THERE IS NO TIN! PERIOD.
However, there is titanium nitride (TiN), an extremely hard ceramic material, frequently used as a coating on titanium alloy, steel, carbide, and aluminum components to improve the abrasion-resistence of the substrate.
TiN is applied as a coating to harden and protect cutting and sliding surfaces. It is also used as a non-toxic exterior coating for medical implants. The most common use for TiN coating is for cutting edge retention and corrosion resistance on machine tooling. Estimates vary, but TiN coating should extend the life of a cutting tool by a factor of three or four.
Applied to steel or carbide, it gives the cutting tool a characteristic bright gold finish, not to be confused with the bronze color given to cobalt tools. In fact, cobalt tools can be TiN coated in order to increase their life span. NOTE: This last option is generally available only on special order.
CONCLUSION: An ever-growing class of tools used for high production drilling and cutting of ferrous and non-ferrous metals. Extends life of the tool many times. In the near future, more and more tools, such as countersinks, will be available with TiN coating. We will keep you posted. Currently we stock the following standard length
jobber drills with 118 degree point.
Fractions: From 1/16" through ½" by 64th increments.
Wire Gauge: From #1 through #40.
A limited number of sets are available. (See Drill Bit Sets)