![]() The drill hole should be smaller than the bolt diameter because the tapped threads will increase the diameter of your hole. Successful drilling and tapping of stainless steel boil down to four factors:īefore drilling, you must first determine the size of the hole required for the eventual tapping. Employing the correct techniquesĪlthough stainless steel is not as hard as high carbon steel, tapping stainless steel by hand or drilling stainless steel using a power drill can be challenging if you do not use the correct tools and techniques. In addition, chips will accumulate and clog your stainless steel tap, leading to tap failure and breaking. The heat will concentrate on the side of the stainless steel taps making it harder for you to turn it. Work hardening also applies when tapping stainless steel by hand. This toughening of stainless steel due to heat is a phenomenon known as work hardening.Įventually, the drill will have to work harder, which will reduce the lifetime of the drills you are using for stainless steel and increases the risk of breaking. If the cutting speed (RPM) is too high and the feed is too slow, the drill will rub the stainless steel instead of cutting it, generating heat and toughening the work material. Why is Stainless Steel Harder to Drill and Tap? ![]() If you have been working with stainless steel for a long time, you will know that high speed and brute force may not work well when using stainless steel. However, stainless steel can become hot and challenging for drilling and tapping if your cutting tools are not used properly. ![]() As a result, it is one of the most common materials for building, DIY projects, decorative elements, transportation, and storage. ![]() Stainless steel is a versatile material that is well-known for its durability and anti-corrosive characteristics. ![]()
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