![]() ![]() However, they are brittle and could break easily if dropped. Cobalt drill bits should not corrode easily, but they may break easily if you’re not careful. And they don’t perform as efficiently on hard steel.Ĭobalt drill bits can be more expensive but have better corrosion resistance. They are cheaper but they are less durable than cobalt. But they are also less durable and require frequent replacement. They possess all the qualities of HSS drill bits and are also more heat resistant. These tools can drill through stainless steel, cast iron, and other harder materials. Continue reading for more information.Ĭobalt drill bits are an extension of high-speed steel and contain five to 8% cobalt. In this article, we’ll compare these two types of drill bits. However, cobalt drill bits are also a better choice for high-production jobs. Both metals have similar properties but cobalt drill bits are significantly more expensive. If you’re looking to buy new drill bits, you’ve probably been debating between cobalt and Molybdenum. If you are drilling a hole in a rock formation, you’ll need to have a drill bit with a high strength metric. It is a versatile material for many different applications. The former is a better choice for those working in a hot environment. High-speed steel drill bits are typically more expensive, but are worth it for many applications. The difference in price is also significant. While high-speed steel is more durable, molybdenum is more expensive than its counterparts. The higher melting point of M42 drill bits makes them the better option for drilling thick metals like copper and brass. The brittle M42 bit is also more susceptible to heat than M7, meaning it may need to be replaced sooner. While both high-speed steel and molybdenum drill bits are durable and tough, M42 drill bits are less ductile and are likely to chip off in extreme circumstances. Both high-speed steel and molybdenum drill bits are great for heavy construction. It helps maintain these properties during high-speed drill operations, as well as in high-temperature environments. While high-speed steel drill bits contain a carbide tip, molybdenum adds hardness and toughness. The difference between these two types of drill bits lies in their composition. High-speed steel drill bits are comparatively stronger and more durable than their counterparts, while their counterparts contain a higher percentage of cobalt or molybdenum.īoth types of drill bits are extremely useful for various drilling jobs, but one type may be better for some tasks than others. molybdenum drill bits can be quite a debate. When it comes to drilling materials, high-speed steel vs. Also, read on for a quick comparison between cobalt drill bits and their counterparts. You can learn more about cobalt drill bits below. This is why they are great for high production work and can be found in nearly every industrial drill bit. Cobalt drill bits are the best option for metal drilling because of this. Cobalt drill bits are extremely hard and can withstand tremendous heat generated during drilling. ![]()
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