Drill Bit Material Chart

Drill bits are cutting tools used to remove material to create holes almost always of circular cross section.

Drill bit material chart.

In order to create holes drill bits are usually attached to a drill which powers them to cut through the workpiece typically by rotation. For a typical drill bit the angle of the point helps determine what type of material the bit can drill. Style a charts provide decimal equivalents of fractions wire gauge drill sizes letter drill sizes and metric sizes. That is because the coating is a hard ceramic material.

Titanium coating makes these bits harder and last longer than the common hss bits. Cobalt hsco is considered an upgrade from hss because it includes 5 8 cobalt blended into the base material. Flatter points such as those with 135 degree angles are suited for drilling into harder material. Carbide carb is the hardest and most brittle of the drill bit materials.

Also known as a core drill bit the annular cutter is used to cut a hole in such a way that the core of the material is left intact and then to retrieve the core from the material. Drill bits come in many sizes and shapes and can create different kinds of holes in many different materials. If you are having problems with excessive heat build up or dulling of hss tooling you can try this type if drill to solve the problem. Bits with steeper points such as those with 118 degree angles are.

This is a great option for drilling into harder steel as well as stainless steel grades. They may require a pilot hole to keep the bit from wandering. It s used mostly for production drilling where a high quality tool holder and equipment is used.