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最后更新:2019年11月5日

Best Cobalt Drill Bit Sets: Drill Through Hard Metals Faster

Drill smarter, not harder, with these top cobalt drill bit sets

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PUBLISHED ON November 5, 2019

虽然标准HSS(高速钢)钻头适用于木材和柔软的金属,但在不锈钢和其他热硬化金属上,它们实际上不会切割它。钴钻头采用较强的材料构造,比平均位更耐热和耐热。如果您使用不锈钢,它们是完美的选择。查看我们的最佳钻钻位套装的顶级挑选。

总体上最好
Irwin 29-piece Drill Bit Set, M35 Cobalt Steel
Irwin 29-piece Drill Bit Set, M35 Cobalt Steel
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Summary
Summary

由工业级钢构建的重型钻头,具有5%的钴,可改善耐热和磨损和网页设计,以实现最大的强度和耐用性。在1/16和1/2英寸之间的尺寸范围内。

Pros
Pros

位包括135度的分裂点提示,以消除步行并立即钻探。随身携带盒包括橡胶过塑料,用于增加滴滴和损坏的保护。

Cons
Cons

Some of the bit sizes are inaccurate and slightly smaller than listed. The latching system on the carry case is difficult and awkward to open.

总体上最好
Irwin 29-piece Drill Bit Set, M35 Cobalt Steel
Irwin 29-piece Drill Bit Set, M35 Cobalt Steel
Best Value
Bosch Cobalt M42 Drill Bit Set
Bosch Cobalt M42 Drill Bit Set
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Summary
Summary

High heat-resistant drill bits with eight percent cobalt alloy and surface-hardened, no-skate tips for maximum performance and durability. Available in a wide range of individual sizes and 14- or 21-piece mixed drill bit sets in a handy carry case.

Pros
Pros

钻头包括厚螺旋设计,用于额外的稳定性,特别是艰难的使用。增强的M42级钴导致训练比特的训练比率比标准钴位长10倍。

Cons
Cons

Indexing on carrying case is difficult to read. The product is slightly more expensive than some of its rivals.

Best Value
Bosch Cobalt M42 Drill Bit Set
Bosch Cobalt M42 Drill Bit Set
Honorable Mention
DeWalt 14-piece Cobalt Pilot Point Drill Bit Set
DeWalt 14-piece Cobalt Pilot Point Drill Bit Set
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Summary
Summary

Set of 14 industrial-strength cobalt steel drill bits in a range of commonly used sizes from 1/16 to 3/8 inch. Specifically designed for use with hard metals, these bits include pilot point tips for accurate drilling, clean holes, and a reduction in locking up after breakthrough.

Pros
Pros

Packaged in the heavy-duty case with interlocking hinge for guaranteed protection and labeled bit slots for ease of use and organization. The set includes a replacement for each of the three most common drill bit sizes.

Cons
Cons

Only available in one set size. Some users describe performance of drill bits as aggressive and grabby.

Honorable Mention
DeWalt 14-piece Cobalt Pilot Point Drill Bit Set
DeWalt 14-piece Cobalt Pilot Point Drill Bit Set

为什么要相信我们


All of our reviews are based on market research, expert input, or practical experience with most products we include. This way, we offer genuine, accurate guides to help you find the best picks.

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总体上最好

If you’re looking for a set of bits that can make your next auto repair project easier, consider adding the Irwin 29-piece Drill Bit Set, M35 Cobalt Steel to your tool kit. Featuring a spiral flute, these precisely-machined bits give you accurate and powerful results. Made out of cobalt-fortified steel materials, these drill bits are capable of withstanding a fair amount of heat. In fact, the metal includes a full five percent of cobalt, bracing the tools to retain their structural integrity despite abrasion and temperature. Ranging in size from 1/16 inch to 1/2 inch, this set comes with all the bits you are most likely to need. With a 135-degree split, they avoid travel during the drilling process, making work both easier and more efficient overall.


值得注意的是,由于增量增加仅为1/64英寸,因此各个位的尺寸可能存在一些问题。有些人可能是名义积小于建议,让您越来越多地走路的风险和损害施力的力量。

总体上最好
Irwin 29-piece Drill Bit Set, M35 Cobalt Steel

If you’re looking for a set of bits that can make your next auto repair project easier, consider adding the Irwin 29-piece Drill Bit Set, M35 Cobalt Steel to your tool kit. Featuring a spiral flute, these precisely-machined bits give you accurate and powerful results. Made out of cobalt-fortified steel materials, these drill bits are capable of withstanding a fair amount of heat. In fact, the metal includes a full five percent of cobalt, bracing the tools to retain their structural integrity despite abrasion and temperature. Ranging in size from 1/16 inch to 1/2 inch, this set comes with all the bits you are most likely to need. With a 135-degree split, they avoid travel during the drilling process, making work both easier and more efficient overall.


值得注意的是,由于增量增加仅为1/64英寸,因此各个位的尺寸可能存在一些问题。有些人可能是名义积小于建议,让您越来越多地走路的风险和损害施力的力量。

Best Value

想要一套不会导致您过期预算的高档钻头吗?看看博世钴M42钻头设置,以实现其合理的价格点和质量建设。钻头本身具有螺旋槽和三平柄型。兼容大多数维修项目,该套装配有21件。通过掺入大量的钴(8%),这些钢合金钻头非常强大。额外的钴增强了本身的坚固性,帮助部件在使用过程中由于摩擦而防止磨损。他们使用Web-Helix设计来促进工作期间的稳定性。它可以防止行走的风险,使其更容易集中钻头本身的能量。有效处理从钛到熨斗的所有内容,这些实惠的比特是任何工具包的伟大方式。


请记住,虽然各个位很好,但读取的情况可能有点棘手。但是,一旦您熟悉钻头集,标记就不可能,这不再是一个问题。

Best Value
Bosch Cobalt M42 Drill Bit Set

想要一套不会导致您过期预算的高档钻头吗?看看博世钴M42钻头设置,以实现其合理的价格点和质量建设。钻头本身具有螺旋槽和三平柄型。兼容大多数维修项目,该套装配有21件。通过掺入大量的钴(8%),这些钢合金钻头非常强大。额外的钴增强了本身的坚固性,帮助部件在使用过程中由于摩擦而防止磨损。他们使用Web-Helix设计来促进工作期间的稳定性。它可以防止行走的风险,使其更容易集中钻头本身的能量。有效处理从钛到熨斗的所有内容,这些实惠的比特是任何工具包的伟大方式。


请记住,虽然各个位很好,但读取的情况可能有点棘手。但是,一旦您熟悉钻头集,标记就不可能,这不再是一个问题。

最耐用的

你打算解决维护项目吗nd need a set of bits that can keep up with the demand? Check out the DeWalt 14-Piece Cobalt Pilot Point Drill Bit Set for its balance between strength and function. The bits range in size from 1/16-inch to 3/8-inch, which makes the set ideal for all types of projects. All of the pieces come encased in a strong polymer container that makes it easy to store the bits and keep them organized. The ABS material won’t crack nor will it let moisture get close to the bits, preventing the risk of rust and corrosion. Made of cobalt-heavy steel, these precisely constructed bits use a spiral flute to give efficient results. Ideal for compact storage and versatile performance, this bit set is a truly worthy candidate.


Even though the tough construction of the bits is really desirable, they are fairly heavy. Keep this in mind when handling the drill at first to avoid any issues with the bits traveling while you’re using the drill.

最耐用的
德沃特14件钴试验点钻头钻头 

你打算解决维护项目吗nd need a set of bits that can keep up with the demand? Check out the DeWalt 14-Piece Cobalt Pilot Point Drill Bit Set for its balance between strength and function. The bits range in size from 1/16-inch to 3/8-inch, which makes the set ideal for all types of projects. All of the pieces come encased in a strong polymer container that makes it easy to store the bits and keep them organized. The ABS material won’t crack nor will it let moisture get close to the bits, preventing the risk of rust and corrosion. Made of cobalt-heavy steel, these precisely constructed bits use a spiral flute to give efficient results. Ideal for compact storage and versatile performance, this bit set is a truly worthy candidate.


Even though the tough construction of the bits is really desirable, they are fairly heavy. Keep this in mind when handling the drill at first to avoid any issues with the bits traveling while you’re using the drill.

最便携

Is your garage already overflowing with tools? Want a set of bits that will work well and not take up a ton of space? Try the Drill America 29-piece Cobalt Drill Bit Set for the unique storage mechanism and sturdy design. Despite coming complete with a large supply of drill bits, ranging from 1/16 inch to 1/2-inch, the set fits just about anywhere. It comes in a round container with individual slots (each clearly marked) for the different bits. The parts themselves feature a spiral flute and a 135-degree point. Split for efficient penetration of hard metals, these bits operate powerfully and precisely. Since the pieces increase in size by 1/64-inches, it’s no issue finding compatible parts. Complete with gold plating, these cobalt-heavy drill bits are able to retain their strength at high speeds, making them ideal for automotive work.


请记住,虽然位坚固,但情况无法保持相同的标准。如果它落下,情况可能会破裂,所以在选择存储新位集的位置时,请记住这一点。

最便携
钻建筑29件式钴钻头套装

Is your garage already overflowing with tools? Want a set of bits that will work well and not take up a ton of space? Try the Drill America 29-piece Cobalt Drill Bit Set for the unique storage mechanism and sturdy design. Despite coming complete with a large supply of drill bits, ranging from 1/16 inch to 1/2-inch, the set fits just about anywhere. It comes in a round container with individual slots (each clearly marked) for the different bits. The parts themselves feature a spiral flute and a 135-degree point. Split for efficient penetration of hard metals, these bits operate powerfully and precisely. Since the pieces increase in size by 1/64-inches, it’s no issue finding compatible parts. Complete with gold plating, these cobalt-heavy drill bits are able to retain their strength at high speeds, making them ideal for automotive work.


请记住,虽然位坚固,但情况无法保持相同的标准。如果它落下,情况可能会破裂,所以在选择存储新位集的位置时,请记住这一点。

Honorable Mention

专注于发现阿工作的一套工具ver the long term? Stroton Store Metric Cobalt Drill Bits live up to even the most demanding standards. Made out of cobalt-heavy steel, the metal includes eight percent of this powerful element, ensuring full structural integrity. Falling between 68 and 70 on the Rockwell Hardness Scale, these bits aren’t prone to chipping. They also won’t lose the effectiveness of the split point tip due to ongoing use. Designed to quickly slice through all types of metals including galvanized steel, these bits are ideally suited to automotive work. The bits aren’t prone to travel during work, letting you focus on precision tasks with more ease. Coming with 19 pieces, these bits range in size from 3/64-inch to 1/2-inch bits, this set is complete with a bit for any project you may need to tackle.


One downside is that the markings are in metric, so if you aren’t familiar with that system, it may require an extra step to convert the digits. In terms of construction quality, however, these bits definitely earn this honorable mention.

Honorable Mention
Stroton Store公制钴钻头

专注于发现阿工作的一套工具ver the long term? Stroton Store Metric Cobalt Drill Bits live up to even the most demanding standards. Made out of cobalt-heavy steel, the metal includes eight percent of this powerful element, ensuring full structural integrity. Falling between 68 and 70 on the Rockwell Hardness Scale, these bits aren’t prone to chipping. They also won’t lose the effectiveness of the split point tip due to ongoing use. Designed to quickly slice through all types of metals including galvanized steel, these bits are ideally suited to automotive work. The bits aren’t prone to travel during work, letting you focus on precision tasks with more ease. Coming with 19 pieces, these bits range in size from 3/64-inch to 1/2-inch bits, this set is complete with a bit for any project you may need to tackle.


One downside is that the markings are in metric, so if you aren’t familiar with that system, it may require an extra step to convert the digits. In terms of construction quality, however, these bits definitely earn this honorable mention.

Tips

  • Extend the life of your cobalt drill bits by sharpening them after they become dull, but keep in mind you won’t be able to replicate a pilot point tip when doing so.
  • 第一次启动钻孔时钻头的滑动被称为步行或滑冰。选择具有分割点或导频点提示的钻头,如果准确性很重要,可以最小化此。
  • Make sure you know what you’ll be using the drill bits for before choosing a set, so you can be sure you choose one with the right sizes.

常见问题解答

Q: What is the difference between M35 and M42 cobalt steel?

A:M35和M42是指钴钢合金中钴的百分比。M35是5%的钴,而M42有8%。

问:哪个更好:钴或钛钻头?

A:Cobalt steel drill bits are ideal for use with hard metals, like cast iron or stainless steel, because they can be sharpened and have high heat resistance. Titanium bits cannot be sharpened but are equally hard and have anti-corrosive properties so they may provide superior performance with wood and softer metals.

问:我需要用钴钻头使用切削油吗?

A:如果您通过金属钻孔,通常需要切割油,因为它润滑钻头以减少摩擦和热量。如果您正在钻出其他材料,但钻井硬质金属时肯定是一个好主意,以改善钻头的寿命。

Final Thoughts

Constructed in industrial-strength steel with five percent cobalt, theIrwin 29-piece Drill Bit Set, M35 Cobalt Steelis our top pick overall, while theBosch Cobalt M42 Drill Bit Setis our best value set.