High-Speed Drill Bits vs Standard Bits: What’s the Difference

High-Speed vs. Standard Drill Bits: Key Differences Explained

Choosing the right drill bit seems simple - until you encounter a hard material, burn out a drill bit halfway through a project, or are left with a messy, uneven hole. As a contractor, or industrial professional, the type of drill bit you select has a direct impact on speed, accuracy, and longevity for drill bits such as high-speed drill bits, standard drill bits, and even high-end drill bits such as carbide drill bits.

This is why high-speed drill bits are generally preferred over standard drill bits. They are designed to handle higher RPMs, withstand higher temperatures, and provide longer-lasting cutting power, particularly when drilling through metal, hardwood, or other tough materials. If you're searching for the best drill bits for metal, high-speed drill bits are likely the best place to begin.

What Are High-Speed Drill Bits?

High-speed drill bits are drill bits that are constructed from high-speed steel (HSS) or improved variants of alloys such as cobalt HSS. They are often referred to as HSS drill bits or high-speed steel drill bits.

High-speed drill bits are different from carbon steel drill bits in the sense that they can resist higher drilling speeds without becoming dull quickly. This is why they are preferred by professionals and industries that require consistent performance for multiple holes and extended periods of drilling.

• High-speed drill bits are best suited for drilling

• Mild steel and carbon steel

• Aluminum and other non-ferrous metals

• Hardwood

• Tough plastics

• Sheet metal and structural metal parts

What Are Standard Drill Bits?

Standard drill bits usually pertain to basic drill bits that are composed of carbon steel or lower-grade steel. These drill bits are the ones that are usually included in low-priced sets and are also packaged with entry-level drills.

Standard drill bits are best used in softer materials and in light applications such as:

• Softwood

• Drywall

• Light plastic

• Occasional household drilling

They can drill through metal, but this is usually done at a slower pace and the drill bit gets dull quickly. Standard drill bits are more susceptible to overheating.

High-Speed Drill Bits vs Standard Bits

Here are some of the key differences between high-speed drill bits and standard bits.

1. Heat Resistance and Hardness

Heat is one of the most common causes of drill bit failure.

Friction generates heat quickly when drilling, and this is especially true when drilling metal. Standard drill bits will soften when they become too hot, and this causes the edge to become dull quickly. When this happens, you’re forced to push harder, generating more heat, which further dulls the edge quickly.

High-speed drill bits, particularly high-speed steel drill bits, are designed to be more heat-resistant. These drill bits can maintain hardness even when they are hot, which means they stay sharper for a longer period and drill effectively.

2. Cutting Speed and Efficiency

Standard drill bits can drill holes, but they may take longer and require more pressure. Have you ever noticed a drill bit “skate” across metal or have trouble biting into the surface? This is probably because the drill bit wasn’t designed for the material.

High-speed drill bits drill faster because:

• The edges are stronger

• The drill bit stays sharper for a longer period

• The drill bit can handle higher RPMs

This is particularly helpful because it ensures that drilling is smooth and doesn’t damage the surface.

3. Durability and Tool Life

If you are a low-volume user, drilling a few holes per month, a standard drill bit will last you a long time. However, if you are a heavy user or work with metal, the difference in durability will be apparent.

High-speed drill bits are more durable in the following ways:

• They are more resistant to wear

• They remain sharper longer

• They need to be replaced less often

In a professional setting, the difference in durability is important because replacing drill bits constantly is a waste of time.

It is much like why companies select high-quality industrial blades and packaging blades - not because they are less expensive, but because they will last longer.

4. Hole Quality and Accuracy

If your project requires clean and precise holes, you might be dissatisfied with the outcome when using regular drill bits, especially when drilling through harder materials. Poor-quality drill bits may cause the following:

• Holes with rough edges

• Burred metal

• Inaccurate hole size

• Overheating and discoloration

High-speed drill bits will provide cleaner holes with less tearing and burrs, especially when using the right speed and lubrication.

5. Price and Value

While standard drill bits are less expensive to purchase upfront, high-speed drill bits are more expensive, but often provide better value for money if you are a frequent user of drill bits.

High-speed drill bits may actually prove to be more economical in the long run if you frequently drill metal or hardwood. This is why many experts rate HSS drill bits as the most economical choice for frequent metal drilling.

When Should You Use High-Speed Drill Bits?

High-speed drill bits are the better choice if:

• You often drill metal: They drill faster and won’t become dull quickly like regular drill bits.

• You want to drill quickly without overheating: They are heat-resistant, which prevents burning, warping, and dulling.

• You want drill bits that last longer: This is cost-effective and prevents work stoppage.

• You are working on repetitive tasks (multiple holes in one job):They perform well from the first hole to the last hole.

• You want cleaner and more consistent results: This is particularly important in fabrication, assembly, and production applications.
  

Are Cobalt Drill Bits the Same as HSS?

No, but Cobalt drill bits are very similar.

• HSS (High-Speed Steel) is the generic “high-speed” choice.

• Cobalt drill bits are HSS drill bits combined with cobalt (usually 5% or 8%).

Cobalt drill bits are even superior at:

• Stainless steel

• Hardened steel

• High-temperature drilling

If you are a heavy user of drilling hard metals, Cobalt may be a good choice to upgrade from regular high-speed steel drill bits.

How to Make Drill Bits Last Longer

Even the best drill bit will not last long if you misuse it. To maximize performance:

• Drill at the proper RPM for the material

• Drill with cutting oil when drilling metal

• Don’t press too hard (let the bit do the work)

• Remove chips periodically when drilling deep

• Store your drill bits properly to avoid edge chipping

Final Thoughts

The distinction between standard bits and high-speed drill bits is all about performance, longevity, and resistance to heat. Standard bits are good enough for light applications, but high-speed drill bits are designed for heavy applications and continuous drilling.

When it comes to faster drilling, cleaner holes, and sharper cutting edges, high-speed drill bits are the better option, especially when dealing with metal. Just as there are high-quality industrial blades and packaging blades used in various industries, having the right drill bit can make all the difference.