If you are looking for the perfect cobalt drill bits for hardened steel, there are a few key points that you need to keep in mind. Cobalt drill bits are made of high-speed steel and cobalt, making them ideal for drilling through hard materials like hardened steel. Here are the 5 key points to consider when looking for cobalt drill bits for hardened steel:
1. Quality: The quality of the cobalt drill bits is a crucial factor to consider. Always go for high-quality cobalt drill bits that are made by reputable manufacturers. Poor quality drill bits can break or become dull quickly, making it difficult to drill through hardened steel.
2. Cobalt Percentage: The cobalt percentage in the drill bit is also vital. The higher the cobalt percentage, the more heat-resistant the drill bit will be. Look for cobalt drill bits with at least 5-8% cobalt content.
3. Size: The size of the drill bit is also important. For hardened steel, you will need a drill bit that is at least 1/16 inch in diameter. Larger drill bits can handle tougher materials.
4. Coating: The coating on the drill bit can also make a difference. Look for drill bits with a titanium coating or a black oxide coating. These coatings can help with heat resistance and extending the life of the drill bit.
5. Price: The price of the drill bit is also important. You don't want to spend too much on a drill bit, but you also don't want to go for the cheapest option. Look for drill bits that offer good value for money and are within your budget.
When you keep these key points in mind, you'll be able to find the perfect cobalt drill bits for hardened steel that will meet your needs and help you get the job done efficiently.
10 Best Cobalt Drill Bits For Hardened Steel
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1. 29pc Cobalt Drill Bit Set For Hard Metals, Plastic, And Wood With Metal Case
The GMTOOLS 29Pcs Cobalt Drill Bits Set is the perfect tool for those looking for precision and durability. Each drill bit in the set undergoes a precision grinding process to ensure a clean surface and high grinding accuracy. The universal round drill shank allows for compatibility with a wide range of tool holding systems and ensures a tight clamp.
The 135° split point and twist design of these drill bits provides fast and efficient cutting with less pressure, reducing walking and ensuring a fully ground drill bit with a sharp and durable cutting edge. The twist design also allows for clear chips to be produced faster, making drilling a breeze.
These drill bits are made with enhanced M35 alloy material, which contains 5% cobalt alloy steel. This increases the wear resistance and durability of each drill bit, making them a reliable choice for various applications. The industry-grade 6542 high-speed steel drill bit set is harder than the 4241 HSS used in other similar drill bit sets.
The set includes 29 drill bits ranging in size from 1/16" to 1/2". The individual sizes included are 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64, and 1/2 inch bits. The set comes in a metal indexed storage case for easy storage and organization.
GMTOOLS is committed to providing high-quality products and customer satisfaction. If for any reason a customer is not satisfied with their purchase, they can contact GMTOOLS for a 30-day money-back guarantee. With its precision grinding, enhanced materials, and efficient design, the GMTOOLS 29Pcs Cobalt Drill Bits Set is a reliable choice for any drilling project.
2. 29pcs Hss Cobalt Drill Bits Set For Hard Metals And Stainless Steel With Three Flute.
The Lichamp 29PCS HSS Cobalt Drill Bits Set is a high-quality drilling tool that is perfect for heavy-duty and tough metal drilling applications. The set features a unique patent design with three flutes that help to clear chips and particles faster, providing users with a more efficient drilling experience.
Made from industrial grade M35 high-speed steel with 5% cobalt, the drill bits provide hardness for wear resistance and can withstand temperatures of up to 1100 degree Fahrenheit. This ensures that the drill bits have a lifespan that is four times longer than other drill bits on the market.
The Lichamp drill bit set is ideal for drilling in heavy-duty tough metals, including hard abrasive alloy metal, hardened stainless steel, and cast iron. The 135-degree split point tip and twist design increase cutting speed with self-centering and prevent skating starts or walking, resulting in smooth drilling and precision.
The set comes with a metal index case that includes a size chart for easy bit access and identification. The drill bit sizes range from 1/16-inch to 1/2-inch in 1/64-inch increments, making it easy for users to select the right drill bit for their project.
Overall, the Lichamp 29PCS HSS Cobalt Drill Bits Set is a high-quality drilling tool that is perfect for heavy-duty and tough metal drilling applications. With its unique patent design, 4x lifespan material, and multiple application capabilities, this set is a must-have for professionals and DIY enthusiasts alike.
3. 115-Piece M35 Cobalt Drill Bit Set For Hardened Metal, Stainless Steel, Cast Iron, Plastic, And Wood. Sizes: 1/16"-1/2", A-Z, 1-60.
The HIDOTOL Cobalt Drill Bit Set is a high-quality tool designed for drilling tough and high tensile strength materials, including hardened metals such as stainless steel, cast iron, and titanium alloy, as well as hard plastics and woods. The set includes 115 pieces made of M35 high-speed steel with 5% cobalt content, providing extended tool life compared to ordinary drill bits.
The characteristics of the HIDOTOL Cobalt Drill Bit Set include a 135° split point with a round straight shank, which prevents walking and ensures precise and faster drilling. The fully ground twist design helps clear particles faster, decreases friction, and reduces heat for a cooler drilling performance.
The set is widely used in various industries due to its compatibility with a range of materials. It is particularly successful in cutting tough materials, making it an ideal tool for professionals who require high-performance equipment. The M35 cobalt high-speed steel used in the drill bits is more suitable for high tensile strength materials, making it a popular choice for professionals.
The HIDOTOL Cobalt Drill Bit Set includes 115 pieces that come in various sizes. The set includes 29 fractional sizes ranging from 1/16” to 1/2”, with 1/64" increments, 26 letter sizes from A to Z, and 60 numbered wire gauges from #1 to #60. This variety of sizes and options ensures that professionals have the right tool for any job.
HIDOTOL is committed to providing high-quality products that meet the needs of its customers. The company offers a 100% satisfaction guarantee, ensuring that if customers are not fully satisfied with the product for any reason, they can contact the company for assistance.
In conclusion, the HIDOTOL Cobalt Drill Bit Set is a reliable and high-performance tool designed to meet the needs of professionals in various industries. Its high-quality material, precise characteristics, and wide range of sizes make it a popular choice for professionals who require durable and efficient equipment.
4. 115pcs Cobalt Drill Bit Set For Hard Materials W/ Metal Storage Box.
The MACXCOIP Cobalt Drill Bit Set is a comprehensive collection of 115 pieces of M35 high-speed steel bits that are designed for cutting through hardened metals, stainless steel, cast iron, wooden plastics, and other materials. The set includes 29 fractional size bits ranging from 1/16” to 1/2” in 1/64th increments, 26 letter size bits from A to Z, and 60 numbered size bits from #1 to #60, providing users with a broad range of options for different drilling needs.
Constructed from M35 cobalt steel, these drill bits are highly durable, sharp, and robust, making them suitable for cutting through a wide range of materials. They are designed to be quick and efficient, with a 135-degree point tip and twist design that facilitates faster cutting, self-centering to prevent walk-off, and faster chip and particle removal.
The HSS cobalt drill bit set is designed for use on hardened steel, with excellent cutting performance that ensures precise cuts without wobbling. The inserts are hardened and polished for improved sharpness and precise cutting, making them ideal for use in a wide range of applications.
The drill set comes with drill holders that have size indexes and is packaged in a small, strong box for easy storage and sorting. The compact storage box makes it easy to keep the drill bits organized, ensuring that they are always readily available when needed.
Overall, the MACXCOIP Cobalt Drill Bit Set is an excellent choice for those looking for a comprehensive collection of drill bits that are designed for use on a wide range of materials. The set's high-quality construction, durable design, and excellent performance make it an ideal choice for both professionals and DIY enthusiasts alike. In case of any questions, the manufacturer provides customer support to ensure that users get the most out of their drill bit set.
5. 115pc M35 Cobalt Drill Bit Set For Hardened Metal & Stainless Steel, W/ Indexed Storage Case.
The COMOWARE Cobalt Drill Bit Set is a comprehensive collection of 115 pieces that includes 29 fractional size bits ranging from 1/16" to 1/2" in 1/64th increments, 26 letter size bits from A to Z, and 60 numbered bits from #1 to #60.
Crafted from high-speed steel with 5% cobalt, these drill bits are highly durable and boast exceptional heat and abrasion resistance. The precise 135° split point and twist design of the bits prevents walking, clears chips and particles more efficiently, and ensures a cleaner and more accurate cut every time.
The M35 cobalt HSS material of these drill bits makes them particularly suitable for working with hardened materials, including stainless steel, cast iron, high-temperature alloys, titanium alloys, hard plastics, and woods. They can also be used for softer materials with great success.
To keep the drill bit set organized and easy to access, it comes with a drill bit holder featuring a size index for convenient storage and organization.
With its superior quality and versatility, the COMOWARE Cobalt Drill Bit Set is an excellent choice for professionals and DIY enthusiasts alike who need reliable and efficient drill bits to tackle a wide range of materials and projects.
6. Bosch Co14b 14-Piece Cobalt M42 Metal Drill Bit Assorted Set
The BOSCH CO14B 14-Piece Cobalt M42 Metal Drill Bit Assorted Set is designed to provide superior performance and durability for high-heat and tough applications. These upgraded M42 Cobalt jobber-length bits are engineered with enhanced M42 alloy material that contains 8% Cobalt alloy, which delivers 10 times longer life than standard bits.
The Cobalt M42 drill bit is designed to withstand high-temperature applications for extended periods of time, making them ideal for use on stainless steel, cast iron, titanium, light-gauge metal, and aluminum. The thick web-helix design provides additional stability in tough applications, ensuring that the bits remain steady and reliable even under heavy loads.
The surface-hardened tip of the drill bits allows them to penetrate tough abrasive materials, making them an excellent choice for use in industrial settings. The set includes 14 different sizes, ranging from 1/16" to 1/2", providing versatility and flexibility for a wide range of applications.
The BOSCH CO14B 14-Piece Cobalt M42 Metal Drill Bit Assorted Set is an excellent choice for professionals who require high-performance drill bits that can withstand the rigors of tough applications. Whether you are working in construction, manufacturing, or any other industry that requires drilling through tough materials, these drill bits are sure to deliver the performance and durability that you need.
Overall, the BOSCH CO14B 14-Piece Cobalt M42 Metal Drill Bit Assorted Set is a top-of-the-line product that is designed to provide superior performance, durability, and versatility for professionals in a variety of industries. With its thick web-helix design, high-heat resistance, and surface-hardened tip, this set is sure to meet and exceed your expectations.
7. Irwin Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
The IRWIN Drill Bit Set is a comprehensive kit designed for professionals and DIY enthusiasts alike. The set includes 29 pieces made of M35 cobalt alloy steel, a material known for its exceptional heat and abrasion resistance. This makes the drill bits suitable for heavy-duty tasks that require a high level of durability.
The drill bits come in sizes ranging from 1/16 inch to 1/2 inch, with 1/64 inch increments, ensuring that users have access to a wide range of options to fit their needs. Additionally, the 135-degree split point design minimizes walk, ensuring that the bits start drilling on point without straying from the intended location.
The heavy-duty web construction of the drill bits provides added strength and durability, making them ideal for tough materials such as metal and hardwood. This feature also ensures that the bits can withstand high torque and pressure without breaking or bending.
One of the standout features of the IRWIN Drill Bit Set is the 5% cobalt alloy steel material used in its construction. This material, combined with the split point design and heavy-duty web construction, ensures that the drill bits can withstand high temperatures and maintain their sharpness for longer periods. This means that users can work for extended periods without the need to frequently replace the bits.
Overall, the IRWIN Drill Bit Set is an excellent investment for professionals and DIY enthusiasts looking for a comprehensive and durable drill bit set. The set's cobalt alloy steel construction, split point design, and heavy-duty web construction make it ideal for drilling through tough materials without compromising on performance. The set's wide range of sizes also ensures that users have access to the right size of drill bit for any task.
8. Drill America's 29 Piece M35 Cobalt Drill Bit Set (1/16" – 1/2" X 64ths) In A Round Case. Dwdco Series.
The Drill America – DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" – 1/2" X 64ths), DWDCO Series is a professional-grade set of drill bits designed for precision drilling in hard materials. The set includes 29 jobber length drill bits, ranging in size from 1/16" to 1/2" in 1/64" increments.
Made from M35 cobalt steel, these drill bits provide extended tool life compared to high-speed steel drill bits. The cobalt steel construction also makes these drill bits more resistant to heat and wear, allowing for more efficient drilling in a variety of materials, including stainless steel, cast iron, and titanium.
The gold oxide finish on each drill bit lubricates the surface and provides wear resistance, reducing friction and heat buildup during drilling. This results in a longer tool life and less wear on the drill bit.
One of the key features of the Drill America – DWD29J-CO-PC drill bit set is its self-centering 135-degree split point. This point design allows the drill bit to penetrate hard materials without the need for a pilot hole, saving time and reducing the risk of the drill bit slipping or wandering. The split point also produces small chips rather than large shavings, reducing the risk of clogging and increasing drilling efficiency.
In addition to its high-quality construction and efficient design, the Drill America – DWD29J-CO-PC drill bit set also meets ANSI specifications for quality and safety. This ensures that the drill bits are reliable and safe to use in a variety of applications.
Overall, the Drill America – DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" – 1/2" X 64ths), DWDCO Series is a top-quality, professional-grade set of drill bits that are designed to deliver efficient, precise drilling in hard materials. With its cobalt steel construction, gold oxide finish, self-centering split point, and adherence to ANSI standards, this drill bit set is an excellent investment for professionals and DIY enthusiasts alike.
9. 29pcs M35 Cobalt Drill Bit Set For Hardened Metal With Indexed Round Case, 1/16"-1/2, Black/gold.
The BeHappy 29Pcs Cobalt Drill Bit Set is a comprehensive set of high-quality drill bits that meets all your drilling needs. The set includes 29 pieces of M35 cobalt drill bits in various sizes from 1/16" to 1/2", making it ideal for a wide range of applications.
Made from high-speed steel M35 cobalt with 5% cobalt content, these drill bits are highly effective in drilling tough and high tensile materials like stainless steel, cast iron, superalloys, titanium alloys, rigid plastics, and wood. The cobalt content ensures that the drill bits are durable and long-lasting, even with prolonged use.
The drill bits feature a 135° split point with a round straight shank that ensures precise and fast drilling. The self-centering design prevents walking and ensures accuracy, making it easy for users to drill with confidence. The full grinding process twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance. The double back Angle process ensures that the drill bit is stable while drilling, reducing the risk of breakage.
The BeHappy 29Pcs Cobalt Drill Bit Set comes with a portable bucket that can be hung anywhere or on your waist for easy operation. The barrel-packed metal drill bit set is convenient for professionals, handymen, builders, and hobbyists alike.
At BeHappy, customer satisfaction is the top priority. If you have any doubts about the product, you can contact them for assistance. The company is committed to ensuring that their customers are satisfied with their products and services.
In conclusion, the BeHappy 29Pcs Cobalt Drill Bit Set is a versatile and durable set of drill bits that is suitable for a wide range of applications. With its high-speed steel M35 cobalt construction, self-centering design, and portable bucket, this drill bit set is a must-have for anyone looking for quality and convenience in their drilling needs.
10. 5pcs 1/2" Hss Cobalt Drill Bits With Three Flute For Hard Metal, Stainless Steel And Cast Iron.
Lichamp 1/2" HSS Cobalt Drill Bits 5PCS with Three Flute for Hard Metal, Hardened Stainless Steel and Cast Iron is a high-quality drilling solution for professionals and DIY enthusiasts alike. This product is designed with a unique 3x flute patent design that clears chips and particles faster, providing users with a more efficient drilling experience.
Made from industrial-grade M35 high-speed steel with 5% cobalt, these drill bits offer exceptional hardness and wear resistance. This material can withstand temperatures up to 1100°F, making it ideal for drilling in heavy-duty tough metals, including hard abrasive alloy metal, hardened stainless steel, or cast iron.
The Lichamp 1/2" HSS Cobalt Drill Bits feature a 135-degree split point tip and twist design that increases cutting speed with self-centering and prevents skating starts or walking. This feature ensures that users can drill smoothly and efficiently with minimal effort.
The 1/2" Cobalt Drill Bit has round straight shanks, and the set includes five pieces with a well-organized clear PS case. This product is perfect for professionals working in construction, automotive repair, metal fabrication, and more.
In summary, the Lichamp 1/2" HSS Cobalt Drill Bits 5PCS with Three Flute for Hard Metal, Hardened Stainless Steel and Cast Iron is a top-of-the-line drilling solution that offers exceptional durability, efficiency, and performance. Whether you are a professional or a DIY enthusiast, this product is an excellent investment that will save you time and effort on your projects.
Best Cobalt Drill Bits For Hardened Steel FAQs
Are there any safety precautions or special techniques that must be used when using cobalt drill bits for drilling into hardened steel?
Yes, there are safety precautions and techniques that must be followed when using cobalt drill bits for drilling into hardened steel. The first and foremost precaution is to wear appropriate personal protective equipment such as safety glasses, gloves, and earplugs. It is also important to use a drill press or a sturdy handheld drill to ensure stability and prevent the drill bit from slipping or breaking.
When drilling into hardened steel, it is recommended to use a slower speed and higher pressure to avoid overheating the bit and causing it to wear out quickly. Lubrication with a suitable cutting oil is also necessary to reduce friction and prevent the bit from burning out. It is also advisable to use a pilot hole to guide the drill bit and prevent it from wandering off course.
Additionally, it is important to periodically check the condition of the drill bit and replace it when necessary to ensure consistent results and avoid accidents. By following these safety precautions and techniques, one can effectively use cobalt drill bits for drilling into hardened steel.
Can cobalt drill bits be used for drilling through other materials besides hardened steel?
Yes, cobalt drill bits can be used for drilling through other materials besides hardened steel. Cobalt drill bits are known for their durability, heat resistance, and ability to maintain their sharpness even when exposed to high temperatures. These qualities make them suitable for drilling through materials such as stainless steel, cast iron, and other metals. They can also be used for drilling through hard plastics, wood, and composite materials. However, it is important to note that cobalt drill bits may not be the best option for softer materials like aluminum, as they can cause excessive wear and tear on the drill bit, resulting in a shorter lifespan. Overall, cobalt drill bits are versatile and can be used for a variety of drilling applications, but it is important to choose the right type of drill bit for the specific material being drilled.
How long do cobalt drill bits last when used for drilling into hardened steel?
Cobalt drill bits are specifically designed to drill into hard materials such as hardened steel. These drill bits are made with a high percentage of cobalt, which makes them stronger and more durable than standard drill bits. The lifespan of cobalt drill bits when used for drilling into hardened steel depends on several factors, including the speed of the drill, the pressure applied, and the frequency of use.
In general, a high-quality cobalt drill bit can last for several months or even years if used properly. However, if used improperly, they may wear out quickly or even break. To extend the lifespan of cobalt drill bits, it is important to use the right speed and pressure, use a lubricant to reduce heat, and avoid overheating the bit.
It is also important to keep the drill bit clean and sharp, as dull or dirty bits can cause excessive wear and tear. When the bit starts to show signs of wear, such as dullness or chipping, it is time to replace it. By following these guidelines, cobalt drill bits can last a long time and provide reliable performance when drilling into hardened steel.
What is the best type of cobalt drill bit for drilling into hardened steel?
The best type of cobalt drill bit for drilling into hardened steel is a high-speed steel (HSS) cobalt drill bit. These drill bits are made from a blend of high-speed steel and cobalt, which enhances their durability, hardness, and resistance to heat and wear. The cobalt content in the drill bit improves its strength and toughness, allowing it to drill through tough materials like hardened steel with ease.
When purchasing HSS cobalt drill bits, look for those with a higher percentage of cobalt, as this will increase the bit's durability and lifespan. Additionally, ensure that the drill bit has a sharp and pointed tip, as this will improve its accuracy and reduce the risk of slipping or wandering.
Overall, choosing the right type of cobalt drill bit is essential for drilling into hardened steel, and HSS cobalt drill bits are the best option for their strength, durability, and resistance to heat and wear.
What is the difference between cobalt drill bits and other types of drill bits when it comes to drilling into hardened steel?
Cobalt drill bits are specifically designed to handle the high heat generated when drilling into hard metals such as hardened steel. They are made of a mixture of cobalt and high-speed steel, which increases their durability and heat resistance. This makes them ideal for use in industrial applications where drilling into tough materials is routine.
Other types of drill bits, such as high-speed steel and titanium-coated bits, are not as durable or heat-resistant as cobalt bits. They may become dull or overheated when drilling into hardened steel, which can cause them to break or wear out quickly.
In summary, the main difference between cobalt drill bits and other types of drill bits is their ability to handle the heat and stress generated when drilling into hardened steel. Cobalt bits are designed to withstand these conditions and are the preferred choice for industrial applications where drilling into tough materials is a common occurrence.