What are the best drill bits for hardened steel? You might have been searching for these handy tools. After all, drilling through metal is harder than on wood. In this case, you need a durable and strong drill bit. It can help with many household projects because it is with a great tapered point design, too.
With it, you can drill through steel, like stainless steel, titanium and iron that is hardened at temperatures reaching up to 1500 degrees Fahrenheit. In the following, let us discuss the top 10 picks on the market and their special qualities. Also, let’s talk about the things to consider when choosing a set of drill bits for hardened steel. Are you ready? Let us get started.
Top 10 Best Drill Bits for Hardened Steel
Hymnorq Metric M35 Cobalt – Best Drill Bits For Metal
The Hymnorq Metric M35 is one of the top choices for a metal drill bit because it is tough and reliable to cut through hard metals, including cast iron and stainless steel.
The drill bits are made of M35 cobalt steel added with cobalt and molybdenum. They are with a hardness rating measuring 67. They are also heat-resistant and can speed up the cutting process. The M35 cobalt steel drill bits are with a long lifespan, too.
The set is ideal for metal working, especially for hard metals, including cast iron and stainless steel. You can also use them for softer materials and high carbon steel. You don’t also need a center punch because they are with quick-cut points, which are self-centering. They can penetrate fast without exerting much pressure. Finally, the set is with 13 pieces of metric bits, such as 2.5 mm, 1.5 mm and 4 mm. For guide on use, you can also check out the easy to read and understand manual.
Irwin Tools 3018002 Cobalt Metal – Best Cobalt Drill Bits
If you’re looking for cobalt metal drill bits, you might want to check out this IRWIN Drill Bit Set. It is already in a 29-piece set that is applicable for many sizes of drill bits that you might need. You can ensure that you’re getting more out of your purchase because of the flexibility that the cobalt drill bits can give you.
Also, I liked that the M35 Cobalt Steel drill bits are versatile for many applications. They can be used for drilling in hardened metal, such as an alloy metal drilling on a steel. I’d also like to note that the cobalt drill bits are abrasion- and heat-resistant. This feature can increase the durability of the drill bits, allowing l0ng-term use.
The set is also with drill bits that are with a 135-degree split point tip that can start drilling without much force. With this feature, you can a spend less effort, too, because it can eliminate walking across the surface. Finally, this set comes with an index case, allowing for quick and easy identification and access.
DEWALT DW1354 14 Piece Titanium – Best Drill Bit For Steel
One of the most durable around, the DEWALT Drill Bit Set is another top-rated choice among the drill bits for steel available. You can use it for a wide range of applications without them being damaged easily. One of its best features is its titanium material. It has titanium pilot point that can extend the life of the drill bits twice when comparing with black oxide.
The drill bits also eliminate walking because the tip can start making contact immediately. They also have a titanium coating that adds to their durability. In addition, this set comes with 14 pieces of drill bits, making them suitable for the busy handymen who use different drill bit sizes. The drill bits are also ideal for metal or wood applications. They also don’t have spin shanks that can prevent the bits from slipping. Also, I liked the tapered web element in the design. They can help in extending the lifespan of the drills bit because they help minimize breakage.
COMOWARE Cobalt Drill Bit Set – Best Drill Bits For Stainless Steel
If you often work with stainless steel, consider the COMOWARE Cobalt Drill Bit Set. The set is already with 13 pieces of heavy-duty drill bits that you can use for a wide range of applications. They are suitable not just for stainless steel but also for cast iron, hardened metal, plastic, and wood. With this versatility, you can do more with your drill bits.
For storage, this set is with Metal Indexed Storage Case. It also makes organization and access easy. This product is also made with high-speed steel along with 5% cobalt. This combination is perfect for higher abrasion and heat resistance. It also adds to the versatility of the drill bits. More so, I liked that they have a 135-degree split point and twist design. This element can prevent walking. It also helps clear particles and chips faster. Overall, the M35 Cobalt HSS drill bits set is one of the most valuable picks around for its heavy-duty performance.
Impact Drill Bit Hardened Metal – Best Drill Bit Set
The Proffi drill bit set helps you accomplish your tasks faster. It is a heavy-duty and well-designed set composed of durable seven pieces of drill bits. The German steel product also comes with a metal case that allows for quick storage and access.
The Professional Duty drill bits are offering up to 25 times better durability versus other HSS drill bits on the market. It is why this product is for those intending to use it for advanced and industrial applications.
I would also like to note that the Europe product is universal. You can use the drill bits for many materials, including carbon, cast iron, alloys, hardened steel and other types of materials. This product also scored 63.5 in the Rockwell scale, ensuring their lowest fragility among drill bits. They can also ensure precise drilling because they have a 135-degree split point. Overall, the high=speed steel drill bit set is yours if you’re looking for sturdy drill bits for your projects. Don’t miss them when looking for drill bits that have a premium quality.
DEWALT DWA1240 Pilot Industrial Cobalt – Best Drill Bit Set For Metal
The DWA1240 is another top contender among the best drill bits on the market for their durability and efficient performance. The DEWALT Cobalt Drill Bit Set is already with 14 pieces of drill bits that you can use for many applications.
Another thing to appreciate about the drill bits is that they’re reliable for speed and a long life. They are perfect for many kinds of DIY projects. The bits also eliminate walking because they come into contact to the surface immediately. It will reduce the working time that you must spend on drilling.
More so, I liked its pilot point along with a split tip to ensure better performance. You can also count on it for use on hard metals and many other types of materials. For instance, you can use the drill bits for drilling into stainless steel, I-beams, angle iron, and other types of metals. It can ensure that you will get more for your spending because the drill bits are versatile for many applications.
Drill America Piece Heavy Finish – Best Drill Brand
The High-Speed Steel drill bits is by the best brand around, Drill America. It is known among many professionals and handymen that want to ensure the long-term performance of their drill bits. This set already comes with 29 different pieces of jobber length drill bits, each with gold and black finish.
The drill bits are made of high-speed steel, promoting wear resistance and better hardness. I’d also like to note that it is designed with self-centering and split points. This design element can improve their precision while also eliminating walking across the surface. More so, the drill bits are in a plastic storage case that allows for easy storage.
They are also for heavy-duty performance aside from durability. The KFD Killer Force Drill Bits are also resilient even with heavy use, and that is thanks to the premium high-speed steel material used in its manufacture. Nevertheless, the set is a highly-recommended drill bit set for professional and non-professionals who want precision in their tasks.
Bosch 9 Piece Impact Titanium TI9IM – Best Metal Drill Bit
You should not miss the Bosch set if you’re looking for heavy-duty and efficient drill bits that can help you get the job done. This set already comes with nine pieces of titanium drill bits. The Bosch TI9IM is made of Titanium, one of the most durable materials around. With it, you can ensure long-term use of your drill bit set for many applications and materials.
I also liked to note that that the tough bits are with a high-impact design. It is impact-rated to offer twice the lifespan of the drill bits. Also, I would like to note that the tough bits are perfect for uses that include hardwood, light or heavy gauge metal, high carbon steel, and other materials.
Also, the impact bits can offer you with an effective material removal, and that’s thanks to its long flute design. Finally, I liked that the bits are with a titanium coating shield, extending their lifespan.
Chicago Latrobe Carbide – Best Drill Bits For Hardened Steel
Another set not to miss on your list is the Chicago Latrobe 780. It is a complete set of drill bits with ¼ inches in size. The Chicago Latrobe tough bits are made of solid carbide, a standard among quality products in the category. Also, this Spade Drill Bit is with an uncoated finish that can offer multiple uses for different materials.
More so, I would like to note that the bits are perfect for other applications aside from hardened steel. They are also for non-ferrous materials and stainless steel. If you’re working with thin sheets, you might also want to choose the bits. The made in the USA spade drills are also designed with 118-degree point along with two pieces of straight flutes. And for rigid setups, the bits are also with a stub length. Plus, the bits are with a round shank that can handle different types of drill chucks.
Irwin Tools 3016032 High Speed Reduced – Strongest Drill Bits
The IRWIN Drill Bit is a cobalt drill bit with a reduced shank. If you’re looking for the strongest drill bits, you should look at this one. You can use it for plenty of applications that include drilling in tough metal. This item is also made from an industrial-grade high-speed steel. It can increase the durability of the product. Plus, it’s also with 8% cobalt alloy that promotes resistance against abrasion and heat.
Also, the drill bit is with a 135-degree split point that can start contacting the surface immediately but with less force. It can prevent it from walking across the surface. The drill bit also has a straight shank, promoting ease of use. In addition, this item can be used for many applications and materials, giving you more flexibility on its uses. Nevertheless, the drill bit is heavy-duty and durable to last through the years. You might want to check it out for yourself.
What Is Best Drill Bits For Hardened Steel?
Drilling through hardened steel requires using the best drill bits designed for metal. The material that composes the bit should be very resistant. One of the best materials is cobalt, especially if you will use a hand drill. High-speed steel can also be a good substitute if you do not have the budget for a cobalt. Tungsten carbide and titanium are also exceptional choices. However, they do tend to be very expensive and they often do not work well with hand drills.
The best drill bits for hardened steel should also have a reliable coating. This helps improve the durability and performance of the bit. Those with black oxide or titanium coatings are the best. It is also important for the drill bit to have a flute design with a 30-degree angle. Do not get a parabolic flute design because these bits only work on softer materials.
A drill bit for hardened steel should also have a 118-degree drill point angle. If you want a faster way to drill, then you should pick a bit with a 135-degree angle. The best bits for hardened steel also have a shorter length. They allow for greater accuracy and are more resistant to breakage.
What Is The Best Type Of Drill Bit For Stainless Steel?
The material composition of the drill bit is one of the most important features that one should look for when buying the best drill bit for stainless steel. It is also one of the ways we can classify or categorize drill bits for hardened steel. In the following, let us find out the different types of drill bits for stainless steel.
High-speed Steel (HSS)
This type of drill bit has a solid steel core and an outer coating of a much harder substance. Most manufacturers of such drill bits apply a coat of black oxide or titanium over the steel drill bit. The harder surface compound of the bit can cut through normal stainless steel without any problems. You must remember these things about a high-speed steel so that you will have an idea about it when comparing the drill bits for hardened steel later.
Most drill bits for hardened steel come with a cobalt material construction. These bits are ideal for hardened steel as well as tool steel, mild steel, and spring steel. They are best used as hand drills. As you could notice, it is versatile that it can be used for many types of steel. You might want to check it out when comparing your choices for a drill bit for hardened steel.
There are no “pure” titanium drill bits on the market. What we have are titanium-coated high-speed steel drill bits. The addition of titanium as coating can improve the strength of the drill bit. It also improves the bit’s resistance to wear. As you could notice, it is a sturdy type of drill bit that can be resilient to heavy abuse and use. You might want to go for it if you are looking for a long lifespan drill bit for many applications.
This is one of the hardest materials on the planet. It is not for DIYers, though, because of the precautions needed when handling the drill bits. They tend to be brittle. The most important attribute of tungsten carbide drill bits is that they can drill through any type of steel, regardless of the steel’s hardness. It is very tough that it can be used for different types of steels, too.
How to Choose a Drill Bit for Hardened Steel
There are several things you need to consider when picking the right drill bit to use on hardened steel. These include the material composition of the bit, its coating, and its overall design. Let us look at each one of them so that you can make a thorough comparison and decide for which type may be suitable for your needs and requirements.
Materials Used in the Construction of the Drill Bit
There are three types of materials that manufacturers of drill bits for hardened steel use today. These include cobalt, high-speed steel, and carbide. Each one has its advantages and disadvantages.
For instance, cobalt drill bits are excellent for drilling through hardened steel. Unfortunately, they tend to be more expensive than high-speed steel drill bits. The disadvantage of high-speed steel drill bits is that they only handle light metal work.
If you want something for heavyweight metal drilling projects, then you should pick a tungsten carbide drill bit. This is the hardest material you can find. Sadly, it also happens to be one of the most brittle. Cautious handling is a must when using a carbide drill bit.
Coatings Used in the Drill Bit
There are two types of coatings that manufacturers apply on their drill bits for hardened steel. One is black oxide. This reduces friction, while also improving the flow of chip. The issue with such a coating is that it only works with ferrous materials.
The other coating is titanium. This type of coating increases the strength and durability of the drill bit. Titanium improves wear resistance, while also making the drill bit harder.
Overall Design of the Drill Bit
Drill length, drill point angle, and flute design are three essential factors to consider when choosing a drill bit for hardened steel. Shorter drill bits are sturdier and more resistant to breakage. They also offer better accuracy.
Most drill bits have a drill point angle of 118 degrees. However, if you want to complete your project in the shortest time possible, then you should pick a drill bit with a 135-degree angle. It also helps if the angle is self-centering. This can help ensure better accuracy when working with hardened steel.
The design of the bit’s flute also matters. The flute facilitates the removal of chips from the ole. In a way, it helps improve the overall effectiveness of the drill. When working with hardened steel, it is best to use a drill bit that has a 30-degree angle flute design.
How To Drill Hardened Steel
Here are the simple steps you can make to drill hardened steel.
- Choose the correct drill bit for hardened steel.
The very first thing you need to do is to choose the correct drill bit that works best with the type of hardened steel you will be drilling. This also includes choosing the right size of the drill bit.
- . Prepare the material to be drilled.
Secure the steel that you will drill. The drill will be set at its highest possible speed. There is a tendency that the drill bit tip will miss its mark if you do not secure the steel correctly. Use a base that has a large enough hole to accommodate the drill bit going through the steel. Position the steel so that the section to be drilled is directly over this hole. When the bit pushes through the steel, it will not go through the base plate.
- Wear the right personal protective equipment.
The movement of metal against metal will produce a tremendous amount of heat. This can produce sparks as well as metal shavings that can fly. You will want to use safety goggles to protect your eyes from these byproducts of the drilling process. Wearing a pair of work gloves is also important to help prevent burning yourself when holding the metal.
- Set the drill.
Set the bit to the drill. Make sure that the steel is secure in its place. Set the drill in its highest possible speed setting.
- Turn the machine on.
Turn on the machine and slowly lower the drill towards the surface of the steel. You can also apply a few drops of lubricant on the surface of the metal prior to drilling.
How to Maintenance Drill Bits
There are a many things you can do to ensure the optimum performance of your drill bits. Here are the most important ones.
- Always apply a small amount of lubricant on the drilling surface to lower the amount of heat that drilling can produce. This also helps extend the lifespan of the drill bit.
- Allow the drill bit to cool off first before cleaning it. Wipe the surface of the bit using a piece of dry, clean towel. Wrap the towel around the drill bit and spin the drill bit slowly for 3 to 5 seconds.
- Clean your drill bits every 5 to 10 minutes during a drilling project. Debris can scratch the bit if you do not remove these from the bit.
- Always store your bits in their respective sleeves when not in use. Apply a bit of oil on the drill bits. Store them in a dry and cool place and away from moisture and direct heat.
- Use a sharpener designed especially for drill bits to maintain the tool’s sharpness. It is one of the most essential parts of the maintenance process if you want to extend the lifespan of your drill bits.
Knowing how to choose the best drill bits for hardened steel will increase your satisfaction in using this kind of tool for your home or DIY projects. Remember what we have discussed earlier on the types of drill bits as well as ways on how to select one. In this case, you will have a better idea on what you’re buying. It will eventually improve your satisfaction in the use of the drill bits that you have purchased. Finally, make sure that you follow the maintenance tips to extend the lifespan of the drill bits you’ve purchased. Buy the right drill bits for hardened steel today!