What is drill bit material?
High-speed steel (HSS) is a form of tool steel; HSS bits are hard and much more resistant to heat than high-carbon steel. They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon-steel bits, and have largely replaced carbon steels.
They last much longer than regular HSS drill bits, and they are good for cutting through any metal, including metal sheeting. Titanium drill bits are harder than cobalt, but because they are coated, they can't be sharpened.
- Method 2 Drill the steel
- Drill a pilot hole by choosing a drill bit 1/2 of the desired diameter.
- Use simple lubricating oil to mark the spot and to reduce friction and heat.
- Hold drill perpendicular to target spot and drill hole.
- Use vertical drill press for more accuracy and thicker pieces of steel.
- These carbide tipped drills are ideal for locksmiths, auto mechanics or any operator drilling into hardened steel. Can be used to drill out broken bolts, studs, taps and drill bits. They also cut hard steel such as safes, bearing races and dies. The carbide is designed to prevent chipping and dissipate heat quickly.
- Cobalt drill bits are extremely hard and dissipate heat quickly. They're mostly used for boring in aluminum and tough metals such as stainless steel. Black oxide-coated HSS drill bits have a finish designed to help resist corrosion and increase durability.
Updated: 22nd October 2018