Drilling through steel requires the right tools for the job. Using inappropriate drill bits can cause the bits to break during drilling or make the process slow and ineffective. Here’s what you need to know about drill bits for steel:
High-Speed Steel HSS Drill Bits
HSS drill bits are the most common type of drill bits for steel. The bits are made of high-speed steel, which is a combination of steel, carbon, and other metals, making them strong and durable. They are suitable for drilling through most types of steel.
HSS drill bits come in a variety of sizes and styles. For steel, twist drill bits are the most commonly used. They have a twisted design that enables them to cut into the steel’s surface, making it easier to drill through. Other types of HSS drill bits for steel include step drill bits and cobalt drill bits.
Cobalt Drill Bits
Cobalt drill bits are made with a high percentage of cobalt, which makes them harder and more durable than HSS drill bits. They are perfect for drilling through tough and hard steels, such as stainless steel and cast iron.
Cobalt drill bits are more expensive than HSS drill bits but are an excellent investment for professionals who regularly drill through steel. They also have a longer lifespan than HSS drill bits, which means you don’t need to replace them as frequently.
Titanium Drill Bits
Titanium drill bits are coated with titanium nitride, which helps to keep the bits cool and lubricated while drilling through tough materials such as steel. The coating also makes the bits last longer as it reduces friction and heat during drilling.
Titanium drill bits are less expensive than cobalt drill bits and are suitable for less demanding drilling tasks such as drilling through softer steels like carbon steel. They are also popular because they come in a range of colors that make them stand out from other drill bits, making them easy to identify.
Carbide Drill Bits
Carbide drill bits are made with a combination of tungsten carbide and cobalt, making them super strong and resistant to wear. They are perfect for drilling through extremely hard and abrasive steels, as well as non-ferrous metals like aluminum and brass.
Carbide drill bits are the most expensive type of drill bits for steel, but they are the most durable and last the longest. They are also suitable for drilling through non-metals like ceramics and plastics.
Tips for Using Drill Bits for Steel
Using the correct drill bit is essential for drilling through steel, but it is not the only factor that determines the success of the drilling process. Here are some tips for using drill bits for steel:
- Always wear safety glasses and gloves to protect your eyes and hands from metal shavings.
- Use a drilling machine or drill press to ensure accurate and straight holes.
- Choose the correct size drill bit for the job. The wrong size bit can cause the drill to stop or damage the material.
- Secure the steel to a stable surface before drilling to prevent it from moving during the drilling process.
- Use oil or coolant to lubricate the drill bit, reduce friction, and prolong the bit’s life.
Choosing the right drill bits for steel is essential to ensure accurate and efficient drilling. High-speed steel, cobalt, titanium, and carbide drill bits are the most commonly used for steel. Always follow safety measures and use the correct size drill bit for the job to achieve the best results. Happy drilling.