![]() When steel bits won’t do the job, a strong-heat resistant hardened steel bit will. Even worse, you could destroy the project you’re working on. Unfortunately, if you use most of the bits you own that are useful for shaving away metal, you’ll probably either bend or break the bit. The Best Kitchen Sinks You Can’t Live Without - July 21, 2019įor the uninitiated, the term hardened steel may not worry you because you have bits in the house that are capable of getting through other metals.The Best Drill Bits for Hardened Steel – Top Picks! - June 15, 2022.To fulfill other drilling requirements, you can also have our drill bit sets to get every type of drill bit you want. This requires a smaller flute which is less likely to snap during use and gives a better impact than HSS drill bits.Īlthough cobalt drill bits are often more expensive than traditional drill bits, they are a good investment if you regularly drill through metal.It is more wear-resistant than HSS and can perform at high temperatures.It has an advantage over high-speed steel as it is effective against hard metals, stainless steel, and cast iron.Cobalt drill bits feature extra strength and durability as they contain 5-8 percent cobalt element.You can use a bench grinder or a belt sander to sharpen drill bits regularly. As the hardness of a cobalt drill bit is consistent throughout the material, it can be sharpened as needed. The most significant advantage of choosing cobalt drill bits over other high-strength drill bits is that they do not get their hardness from a hard alloy coating on the surface. These contain some amount of cobalt, therefore they are called cobalt drill bits. Some fabricators believe that cobalt drill bits are made of pure cobalt, but it is not so, they are made of a steel alloy with 5 to 8 percent cobalt for cutting various hard metals including stainless steel and cast iron. Cobalt drill bits have almost all of the same properties as HSS drill bits, however, they are more expensive. For precise drilling through wood, you'll need separate wood drill bits. However, they are not made to cut soft materials like wood or plastic. In addition to metals, they can also cut soft materials. What is Cobalt Drill Bits Used ForĬobalt drill bits are used for cutting hard alloy steel, tool steel, cast iron, and aluminum alloys. They also feature heat resistance, extra durability, strong impact capacity, and high strength. Cobalt drill bits are stronger than HSS drill bits and can easily drill through hard materials such as hardened steel and stainless steel. Today through this article we will know what are cobalt drill bits, what are they used for, and why choose a cobalt drill bit? Cobalt Drill BitsĬobalt drill bits are metal drill bits made from a mixture of high-speed steel and 5-8% cobalt. Cobalt drill bits are made from a steel alloy that contains 5 to 8% cobalt instead of pure cobalt. The auger bit and spade bit are used to drill through the wood.Ĭobalt drill bits are particularly good at cutting strong metals such as stainless steel and cast iron, apart from this they can also be used on soft materials. ![]() ![]() There are different types of drill bits, with diamond drill bits used to drill through glass and tile, while black oxide drill bits are perfect for drilling through plastic and carbon. They are used to make holes in metal, wood, plastic, and other materials. Drill bits are available in various shapes and sizes. ![]()
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