Bronze, cast iron, stainless steel, and titanium are among the metals that cobalt bits can cut through.Ī good grade cobalt bit's cutting edge should last longer than a conventional HSS bit's. They're commonly utilized to cut through tough or abrasive materials. Because of their heat resistance, cobalt bits can work for long periods without bothering to cool or use cutting fluid. They can drill at substantially faster speeds than a traditional HSS drill bit. With a melting point of 1495☌ and a boiling point of 2927☌, cobalt is ideal for high-temperature applications.Ĭobalt drill bits are extremely durable. Steel (or another alloy) is combined with a tiny quantity of cobalt, usually between 5 and 7 percent, to make cobalt bits. If you're drilling with HSS drill bits for an extended period or at high RPMs, cutting fluid may be required to keep the bit cool. HSS drill bits can get dull over time and require sharpening, which requires the use of specialized gear that aren't always available. They're safe to run at high speeds (RPM) and give long-term performance if properly maintained. Hardwood, metals, PVC, and plastic can all be securely drilled with HSS drill bits. HSS bits are extremely robust and durable due to the high concentrations of chromium and nickel in stainless steel. High-speed steel or HSS drill bits are tough and heat resistant. The differences between high-speed steel (HSS), cobalt drill bits, and carbide drill bits are discussed in this article. Drill bits come in a variety of shapes and sizes, as well as different coating materials and compositions, for various uses. When it comes to drilling, selecting drill bits is a difficult task. HSS vs Cobalt vs Carbide Drill Bits: What To Choose
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