More than HSS but less than Carbide drill bits Hardest materials like concrete, stone, and masonry Hardened materials and abrasives including titanium, cast iron, bronze, and stainless steel Soft materials like wood, plastic, some metals, steel, brass Carbide Drill Bits: ComparisionĬarbon, tungsten, chromium, and cobalt with iron as a base material
Carbide-tipped bits are commonly used in stone and masonry drilling. Carbide drill bits are the toughest and most brittle of all drill bits. It's brittle, like the cobalt drill bit, and could be broken up if used incorrectly. Carbide Drill BitsĬarbide drill bits are extremely hard, have a high heat dissipation rate, and can keep an edge for longer than other types of drill bits. If you don't take adequate care of your cobalt drill bits or if they're dropped, they can break, which can be pricey. Cobalt, on the other hand, can be fragile. They're corrosion-resistant, much like other HSS bits, so they'll keep their shape in any storage or use situation. 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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