An interesting charismatic is that these do not perform well on aluminum since aluminum is part of the coating.

Not meant for hard materials and high heat transferĪlTiN is a couple of steps up from TiN, with extended life and performance.

TiN extends the drill life and is an excellent entry-level coating for machining needs.

An excellent coating for field techs wanting an excellent all-around drill bit.

One of the most popular coatings for HSS Drills.

These bits are not prone to chipping and flaking.

Heat treatment means 50% longer tool life, over Bright Finishīlack and Gold finish drill bits resist corrosion and breakage while increasing lubricity.

These bits are best for use on ferrous metals. Naturally, this also extends the life of the tool.

Great for drilling into low-carbon steel and aluminum.īlack Oxide finishes increase lubricity which helps to resist damage from heat and corrosion.

We’ve selected a few of the most popular coatings to keep things simple, so let’s jump in.īright Finish is a funny term because these drill bits are actually uncoated. Coatings extend tool life and improve cutting performance.

Throw a good coating on any drill bit and you’ll completely change its characteristics.

Will outlast M42 Cobalt by at least a factor of 10-20.

Allows for Through Spindle Coolant system or TSC.

Provides the best heat and chip resistance.Can be run much faster (three to five times), decreasing the time needed to produce holes.The most expensive in terms of up-front costs.This also helps to prevent wear, which is nice since TSC drill bits are pricey. In situations where you’re drilling deep into very hard materials, the feeding of coolant through the drill allows for better chip evacuation and self-cooling. If you’re running a CNC or frequently use a drilling press, this material is worth the investment.Ĭarbide drills allow for a Through Spindle Coolant system or TSC as it’s known. This makes Carbide a bad choice for hand drilling. One characteristic of Carbide is that it’s brittle, so it won’t flex. A C arbide drill will outlast a C obalt drill by at least twenty times, reducing the cost-per-hole significantly. Solid Carbide drill bits are the most expensive but they will outlast other drill bit materials by a longshot. You can pretty much expect the same characteristics as a standard HSS drill, but with increased performance across the board.ġc. M42 Cobalt is high-speed steel with 8-10% Cobalt added in order to increase the hardness and endurance of the tool. Good in drill presses and forgiving in a hand-held drill gun.Manufacturers can configure an HSS drill bit for just about any application you can think of.

High-Speed Steel is readily available, and we have plenty of it right here in the United States. HSS is also extremely versatile. High-Speed Steel ( HSS ) is the most popular drill bit material for several reasons. There are three popular composites and they all serve a different purpose. The first thing to think about is the composition of the drilling bit. Materials - What’s this thing made out of? We’ll break it all down in a concise way to help clear things up to save you some time.ġ. When it comes to choosing the right drill bit for the job, there are three things to consider material, coating, and the geometry of the tool.

Titanium carbide drill bits