Whether you are a professional or simply engaging in some DIY around the house, knowing the material that your drill bits are made of as well as what each specific drill bit type is needed for what job are important factors to consider when you want to drill holes, especially into tough materials like cast iron.

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Much like counterbore bits- minus the center drill-, flat bottom bits are a type of drill bit that is able to cut flat bottom blind holes as well as drill wide thru holes, making them great for creating locks, wiring holes, and door knobs.

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High speed machining is a process that is used in the manufacturing industry to create metal parts with a high degree of accuracy.

Let’s now take a look at some comparisons between the metals of the most common drill bits used for drilling holes into soft materials or even tougher materials like carbon steel.

Designed to create a flat bottom blind hole that will conceal the fastener head and stop it from emerging above the surface material, some counterbore bits have spurs to prevent chipping or splintering.

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Despite the tough nature of these drill bits, they can be problematic as they are susceptible to heat and will be ruined if overheated. They are also a more costly option.

Different drill bit materials work better with different surfaces, whilst different drill bit types will also work better for certain jobs.

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Hopefully, you should now have all of the information that you need to decide as to which drill bit will suit your needs in the most appropriate manner!

These bits will feature flat blades- either two or more- that come from the drill’s center and extends outwards to the edge.

This center hole will be small enough to penetrate the material that is being drilled into, which is why these bits have tapered head fasteners that sit on the level of the material surface.

High carbon steel drill bits are an improved version of low carbon steel bits, able to be used with some particularly soft metals as well as hardwood.

Titanium drill bits are stronger and tend to last longer than cobalt, making it the more effective bit for those who use a drill frequently, and especially when drilling large holes.

With a good level of resistance to both wear and heat, high speed steel drill bits- otherwise known as HSS drill bits- are the most common to be found on the market due to their versatility and ability to work on a wide range of materials, including metal and wood.

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That being said, it is also particularly brittle in comparison to high speed steel, which works fantastically with a handheld drill or with hammer drills to cut through even mild steel and create a pilot hole.

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This popular style of drill bit has a wide range of applications and a huge amount of versatility, available in all sorts of sizes and made of all kinds of materials, such as cobalt, carbon steel, high speed steel and carbide.

These drill bits are able to retain their hardness at higher temperatures in comparison to run-of-the-mill high speed steel ones. That being said, they also tend to be somewhat more brittle.

With this in mind, we are going to be looking at some common drill bit materials and types and doing some comparisons to help you on your way to identifying which drill bit is the most appropriate for you and your hammer drill, cordless drill, or twist drill.

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The main issue that can come about with titanium coated drill bits is that they can’t be sharpened effectively, so once they are dulled, they won’t return to the level of sharpness that they once had.

In comparison to cobalt, carbide drill bits can resist heat excellently. On the other hand, cobalt is well suited to difficult metals.

Hardenability refers to the ability of steel to form martensite and be hardened during quenching, while hardness refers to the resistance to penetration after ...

Cobalt coated drill bits are often used when it comes to drilling stainless steel as well as other, more difficult metals.

Despite this brittle nature, cobalt has all of the versatility of high speed steel and even more so thanks to being able to drill tougher materials.

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Masons drilling precision holes into materials- such as glass, stone, tile, concrete etc- tend to get the most out of diamond drill bits, particularly those working in industries that involve the drilling of abrasive materials, such as in the aerospace industry or the automotive industry.

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Cobalt is much more difficult to use with hardened steel and can also be brittle, but they are an inexpensive choice for more casual drillers who want accurate drilling that cannot be offered by many other drilling materials such as solid carbine or black oxide, which is used to create carbide tips for power tools.

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Certain bits are specially designed for specific purposes, such as masonry drill bits, annular cutter bits, plug cutter bits and tile and glass bits.

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304 is the most commonly used stainless steel alloy. It stands out with its strong formability and excellent weldability. It can be easily roll-formed or bent.

Due to their ability to hold up when drilling abrasive materials, carbide tipped drill bits are frequently used in drilling processes that involve fiberglass reinforced plastic.

One of the least expensive choices of a drill bit, low carbon bits are best used with certain types of plastic along with soft woods as they need to be sharpened more often than other kinds of drill bits.

At Accu-Fab, we bring comprehensive contract manufacturing solutions tailored to meet your specific needs. Leveraging cutting-edge technology and skilled craftsmanship, we offer expertise every steps of the way — from initial Design For Manufacturability and engineering support, to full metal fabrication and cosmetic finishing or advanced assembly. With robust quality controls and real-time inventory management, we ensure timely delivery of high-quality metal enclosures, cabinets, frames, racks and weldments. Contact us to learn how we add value to your supply chain.

Two flute center drills with 60deg cutting angle which provides precision centers for your lath machine workpeice · HSS M-2 grade give tool life a good boost ...

Any steel and metallic drill bits are able to be coated with zirconium in order to improve their strength and reduce friction, which can improve the precise nature of the drilling.

Carbide is, alternatively, for use with non-ferrous heavy materials and abrasive metals, which sets them apart from cobalt bits, when it comes to working with thin metal, especially when using drill presses.

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These kinds of bits are also useful as they allow you to run your drill at a faster level of rotations per minute without the risk of an excessive build up of heat.

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