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Because this steel material is so rigid, using a bit that can’t withstand high speed and intense heat can result in a burnt-out drill and a very messy cut.

Therefore, drilling hardened steel should be done at a low RPM and feed rate. Feed rates are typically at least 50% lower than for lesser hardness steel. Speeds ...

The tip of your bit will provide a unique cut and entrance point for the rest of the tool, so you must identify the type and size of hole you need to make and pick the bit designed for that job.

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Hardened steel is typically medium to high-carbon steel that goes through a hardening process. To strengthen the metal, it is exposed to extremely high temperatures, then tempered (cooled down quickly) and heated again, creating a chemical reaction that hardens the outer layers of the material and forms a durable core.

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The best way to drill through hardened steel is by applying ample pressure at a downward angle, avoiding tilting or turning. Even the slightest angle can cause an aggressive and uneven cut or even break the bit's tip.

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Jul 22, 2014 — Assuming you are turning low carbon steel with a high speed steel cutter, your SFM should be from about 60 to 100. That equates to a spindle ...

When it comes to the appropriate length, you need to get a bit long enough to make its way through the steel item with a clean cut.

Because hardened steel is made to be durable, long-lasting, and wear-resistant, drilling into it isn’t an easy task that you can accomplish with any drill bit. You need one that is just as strong as the material itself.

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Having the proper coating on a drill bit can reduce the heat created when the high speed and pressure of the bit come into contact with the metal. Titanium nitride and black oxide are excellent coating options due to their ability to reduce friction, thus reducing heat.

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The shank of the bit is just as important as the bit style. The type of shank on your bit will assist in getting the smooth cut you want for every scenario. The shanks can differ in length and shape.

Hardened steel is one of the most challenging metals to cut through when it comes to drilling. Please use the information and tips to choose the right drill bit the next time you work with this rugged and tough material.

A spiral bit or twist drill bit is made up of flutes – twisted parts of metal with sharp edges on each side. The most common number of flutes for cutting hardened steel is 4.

When browsing these sites, remember to key in on the specific details, recommendations, and requirements for the project you are about to tackle.

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Another angle to look for is the point angle of the drill bit. This feature also comes in various options, each ideal for a specific task.

Remember that extra long bits are great when drilling through thicker hard metal but are much easier to snap. If you must use a long drill bit, keep your drill as straight as possible.

Before discussing the types of drill bits best used to puncture holes in hardened steel, let's quickly discuss what hardened steel is to understand better why certain bits are necessary.

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While cutting into hardened steel can be challenging, it isn’t impossible, and with the right drill bit set, you can do it with great precision and a smooth, clean finish.

High-speed steel is the most popular material to use for drilling hardened steel. This bit has the strength and ability to puncture hardened steel with a smooth, clean cut.

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Where can you get the top drill bits for drilling hardened steel that meets the above criteria? Consider purchasing quality products from these top manufacturers in the industry:

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While browsing your local hardware store, you will come across an array of metal drill bit styles and shapes, each made for a specific type of cut. While you can use any drill bit you desire if it is rated for hardened steel, the best kind is a spiral or twist bit.

Hardened steel is specifically designed to hold up against the most rugged conditions and jobs, so choosing the right size, material, coating, length, number of flutes, and angles will help ensure the hole is precisely how you want it.

Before you begin working on your next hardened steel project, quickly examine the specs ideal for the perfect drill bit.

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Cobalt bits and carbide bits are other favorites in this space because they are heat-resistant and more durable than high-speed steel options.

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Lengths of a bit shank range from 0.0135 inches to 1 ½ inches or 1mm to 15mm. The larger your shank, the longer the bit is overall.

The drill bit size you use when cutting hardened steel should depend on the hole size you are looking to create. There are various options offered, including:

Hardened steel is often used in industrial settings or for products designed for strength and durability and made to last. Because hardened steel is specifically made to resist damage and breakage, drilling a hole into it can be difficult.

Like stainless steel, hardened steel needs a strong and durable bit to get smooth precision when drilling into it. However, stainless steel doesn’t have as high a carbon content as hardened steel, making it a little easier to work with.

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