The Best Drill Bits for Hardened Steel

Save

For most household projects, a high speed steel drill bit is sufficient. When you're drilling through hardened steel, however, a strong, heat-resistant drill bit is needed. A titanium drill bit is good enough for most home projects. However, if you do a lot of drilling into hardened steel, a cobalt drill bit, although expensive, will provide long-lasting performance.

Hardened Steel

  • Hardened steel includes such metals as titanium, stainless steel and iron. It is produced by heating steel to a hardening temperature of between 1,450 and 1,500 degrees Fahrenheit. The steel is then cooled rapidly by placing it into an oil bath. The resulting steel is used in the manufacture of bolts, screws, machinery parts, safes and construction materials. It can be difficult to determine whether a metal is hardened steel or not. If the metal cannot be filed, it is most likely hardened steel. Sheet steel is not typically hardened.

Cobalt Drill Bits

  • Cobalt drill bits are strong enough to penetrate stainless steel, titanium, nickel and iron. The drills are made of cobalt alloy that is embedded throughout the bit, producing a strong product that can penetrate these hard, abrasive materials and withstand high temperatures. If a cobalt drill bit becomes dull, you can sharpen it without affecting its strength. Cobalt drill bits are typically used in industrial applications and for repeated drilling projects.

Titanium Drill Bits

  • Titanium drill bits have a strong titanium coating for good surface hardness and resistance to corrosion. The titanium coating on these bits reduces friction when you're drilling and holds up under heat. Titanium drill bits last longer than standard high speed steel drill bits and have a higher hardness level than cobalt bits. However, the bits cannot be sharpened like cobalt bits as the titanium coating comes off if they're sharpened.

Carbide Drill Bits

  • Carbide tipped drill bits are strong bits with high heat resistance used for high speed drilling by auto mechanics, locksmiths and machinists drilling into hardened steel. The bits are used to drill out broken bolts and drill bits and to drill into safes and through studs. They are best suited for industrial uses.

Related Searches

References

  • Photo Credit Jupiterimages/Photos.com/Getty Images
Promoted By Zergnet

Comments

You May Also Like

  • About Drill Bits for Hardened Steel

    Hardened steel is a term for high or medium carbon steel that received quenching treatments and then had ample tempering. This type...

  • Cobalt Vs. Titanium Drill Bits

    Besides titanium and cobalt, drill bit choices also include steel, high-speed steel, black oxide and carbide-tipped. Drill bits vary with respect to...

  • How to Drill through Stainless Steel

    Drilling through stainless steel is not impossible, even though it may seem like it. Stainless steel's chromium content makes it more difficult...

  • How to Drill Hard Steel

    Hard steel, or hardened steel, is often used in industrial machinery, safes and automobile parts, among other things. Drilling into hardened steel...

  • How to Drill High-Carbon Steel

    High-carbon steel, or hardened steel as it is sometimes called, uses carbon as the main alloying constituent. High-carbon steel can become harder...

  • The Best Masonry Drill Bits

    High quality masonry drill bits function much differently than standard drill bits. For one, the channels which feed material back through the...

  • What Are Titanium Drills Used For?

    Titanium drill bits are a bit of a misnomer. They are not made of pure solid titanium, but rather are made of...

  • What Are the Best Drill Bits for Drilling Metal?

    Just like there are a variety of different types of drills, there are also many different drill bits from which to choose....

  • How to Drill Through Stainless Steel

    Drill through stainless steel by setting the tool to a low speed in order to prevent overheating and dulling the bit. Discover...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!