As being one of the most frequently used power tools in any DIY or home improvement project, drilling machines are developed with several types of attachable drill bits. Drill bits are made to be used on different materials such as metals, woods, plastic and glass. However, not all drill bits will work on all materials. Some will be better on wood, but some will be most suitable used on metals. As a result, it is essential to choose the right drill bits material for the best performance.
1. Carbon Steels
Drill bits made of low carbon steels have a significant advantage compared to others thanks to their low cost. They are the cheapest but not the worst drill bits. They cannot cut hard metals or hardwood, but they are most suitable for drilling through soft operations such as softwood or plastics. The biggest drawback of low carbon steel drill bits is that they require good maintenance to extend the life span.
High carbon steel is a tougher material than low carbon steel, so it is used to drill through hardwood or light metals. Drill bits made of high carbon steel have a longer lifespan and require less maintenance to hold form.
2. High-speed steel (HSS)
HSS drill bits are the most popular drill bits and can be found easily on the market. HSS is a particular type of steel which can work in high temperature without losing it shape and hardness. As their name is “high-speed”, they’re safe to operate at high speeds (RPM) and provide better performance than a carbon steel one. However, HSS drill bits are not as effective at normal temperatures as when they are working in high temperatures.
There are some different types of HSS. The most famous is the “M2”, which is the most widely used HSS and is used in various tools, such as drill bits, taps, and reamers.
Cobalt drill bits are more solid than HSS drill bits. As a result, they can work at even much higher speeds than a standard HSS drill bit. They also have a longer lifespan and only require normal maintenance to operate at peak performance.
They are most often used to cut through hardened and abrasive materials that HSS bits cannot. Cobalt bits can cut through the most hardened metals, including stainless steel and titanium.
Each type of drill bits has its own set and advantages and disadvantages. They are made for different purposes and cannot work effectively if they are not used in a suitable material and technique. It would be best if you asked professionals for advice before deciding which drill bits fit your project.