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TiN Coated: TiN refers to titanium nitrate, which slows the progression of wear on bits that drill hard metals.Black Oxide: helps the bit to retain lubricants to prevent the onset of rust.Unlike carbide-tipped bits, solid carbide bits consist entirely out of carbide. When handling projects involving extremely tough materials, it would be a good idea to consider solid carbide bits. Carbide-tipped bits are typically used for masonry, tile, and concrete drilling. This is why manufacturers prefer making only the tips out of carbide. As a result, it would not be feasible to make an entire bit out of the substance. Nonetheless, carbide is extremely expensive. They are formed when carbon is combined with metal. In fact, some carbides rival diamonds for the hardest material known to man. See Also: Cobalt vs Titanium Drill Bits: Which is Best?Ĭarbides are one of the strongest substances on the planet.Such an alloy guarantees you a bit that can go through just about any surface. Sometimes, these drill bits consist of an alloy of cobalt and HSS. Cobalt alloys have an exceptional ability to withstand heat and resistance. Thanks to cobalt’s immense structural strength, cobalt drill bits are especially adept at drilling through stainless steel and other tough materials. High-speed steel bits are made from carbon steel with chromium and vanadium additives. It is suitable for drilling wood, plastic, and soft metals. High-speed steel (HSS) is one of the most commonly utilized materials in the manufacture of drill bits. The following are some common materials used in drill bits. While almost all bits are made from metal due to its toughness, the difference comes in the metal composition. It also prevents you from losing money, purchasing a drill bit that cannot handle your project. Using the right bit material enhances your efficiency. Drill bits are made from different materials to suit their purpose.