This is the topic we will look at together today and hopefully it will be the key to successful drilling in metal materials. We will believe that our advice and our offered products needed for turning, milling, drilling and threading will be the right choice.
Not only is drilling in metal an activity that can be easy. Moreover, this activity is also easy if you have the right tools and technique. One of the key elements is choosing the right drill bit. But how do you choose the right one when they all look the same? Yes, the difference in shape is minimal, it rather depends on the material they are made of. The more commonly used HSS drill bits, i.e. made of high-speed steel, can handle common metals and unhardened steel. HSS metal drill bits can also have a surface layer, so they are then designed to be able to drill stainless steel. Then we also have cobalt drill bits, which are both harder and more brittle. Historically, drill bits have evolved from simple tools to today’s sophisticated tools made of various materials, which we have already mentioned.
Main Factors or Reasons
- Point: The point angle of a metal drill bit is typically 118, 130, or 135 degrees. This angle is key for efficient drilling and minimizing friction.
- Material: Metal drill bits are often made of high-speed steel (HSS) or are alloyed with cobalt (HSS Co5% or HSS Co8%). Cobalt drill bits are ideal for drilling stainless steel due to their higher hardness.
- Helix shape: The specific helix shape helps to evacuate chips and reduce friction.
To finally get to the core and what to drill stainless steel with, let’s get to it. Also remember that stainless steel is a stronger and harder material. When adjusting the drill and fastening it in a vice, keep this in mind, clamp it tightly and always use a lower cutting speed. We can drill stainless steel with the options mentioned above and there is no need to elaborate further. What you should remember and we want to point out is that you should not use the same drills for steel and stainless steel. These tools should be separate and prevent contamination of the material so that you do not have to deal with rust from the rest of the steel. Also, do not forget about proper cooling and drilling technique to prevent injuries, poor quality and extend the life of the drill.
If you are planning to drill in the coming days and you know that something is missing from your equipment, contact us and explore our range of cobalt drill bits that you can purchase from us. Share, write, call and we look forward to your responses again.
