They are ideal for drilling through hard materials, including ceramics, glass, and masonry, as well as hard metals like stainless steel and cast iron. Disadvantages: Cobalt drill bits are more expensive than HSS drill bits and require specialized equipment for sharpening.Ĭarbide (Carb) drill bits are made from tungsten carbide, which is a dense and durable material that can resist high temperatures and wear.Advantages: Cobalt drill bits are highly durable, resist wear and tear, and maintain their sharpness for longer than HSS drill bits.Cobalt drill bits are ideal for drilling through hard metals, such as stainless steel, cast iron, and titanium. They can withstand higher temperatures and are less prone to dulling. Disadvantages: HSS drill bits are not suitable for drilling hard metals, such as stainless steel, and can lose their sharpness quickly when used on tough materials.Ĭobalt (HSCO) drill bits are made from high-speed steel with added cobalt, which enhances their strength and heat resistance.Advantages: HSS drill bits are relatively affordable, easy to sharpen, and have a long lifespan when used correctly.HSS drill bits are suitable for drilling into soft metals, such as aluminum and brass, as well as wood and plastic. It contains tungsten, molybdenum, chromium, and vanadium, which provide increased strength and durability. High-speed steel (HSS) is a type of tool steel that is highly resistant to heat and wear. Here are the three most common types of drill bit materials: High-Speed Steel (HSS) Whether you're a seasoned metalworker or just starting, this guide will equip you with the knowledge you need to make informed decisions and achieve the best results. Therefore, it's essential to understand the various types of drill bits available and their unique features, including materials, coatings, point angles, and lengths. Using the wrong bit can result in damage to the material, decreased efficiency, and even injury to the user. But not all drill bits are made the same, and choosing the wrong one can lead to disastrous results. Drill bits are cylindrical cutting tools that are used to create holes in various materials such as metal, plastic, wood, ceramic tile, and concrete. One of the most important tools in any metalworker's arsenal is the drill bit.
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