Metallurgical Content Show
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If you are interested in what is the best machine you can use with your drill bit then be sure to look at what we think are the best drill press for metal. The top 4 drill bits for stainless steel as of 2022:Drill Bit Good Step Drill Set Second Pros 21 Peice set from Dewalt - more than you need Great solid brand in Bosch with 14pcs Stainless is like butter with this drill bit 6pcs and design means you can cut in 50 different sizes for a cheap price Cons Regularly out of stock and hard to get for a good price Less drill bits than the Dewalt set Step drills take some getting used to Best for Most People Pros 21 Peice set from Dewalt - more than you need Cons Regularly out of stock and hard to get for a good price Good Second Option Pros Great solid brand in Bosch with 14pcs Cons Less drill bits than the Dewalt set Best Step Drill Pros Stainless is like butter with this drill bit Good Step Drill Set Second Pros 6pcs and design means you can cut in 50 different sizes for a cheap price Cons Step drills take some getting used to 1. EZARC Carbide Hole Cutter Heavy Duty for Stainless Steel, 3/4 InchThis tungsten carbide hole cutter is one of the many cutters produced by EZARC that range in size from 9/16” (14mm) to 4-3/4” (120mm). It incorporates a stepped pilot drill bit that is replaceable and protects the tungsten carbide teeth on the cutter from being damaged by a sudden impact to the material being cut. The shank size comes in two different sizes—10mm for diameter less than 70mm and 13mm for diameters greater than 70mm. With high-grade carbide grit for long-lasting results, it will produce precise cuts through various materials up to 5mm thick. The stepped pilot drill bit has a built-in ejector spring that automatically ejects the cut disk, and to prevent any breakthrough and damage to the work surface. Ideal for the DIY enthusiast as well as professionals, this hole cutter will give perfect results time after time thanks to the technology used in the manufacturing process. It can be used with a corded hammer drill or cordless drills, impact drills if set to drilling mode, and CNC drilling machines. Cutting holes in stainless steel sinks to accommodate extra fittings such as a soap dispenser, becomes simplicity itself. If you are involved in industrial projects such as heating, ventilation, or air conditioning where a robust hole cutter is needed, then this one is well worth considering. Smooth, precision holes can be achieved in the high-quality stainless steel that is associated with these professions, and this hole cutter is reported to be ten times more hard-wearing than standard bi-metal cutters. Features:
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EZARC Carbide Hole Cutter Heavy Duty for Stainless Steel, 3/4 Inch 19mm
Electricians, plumbers, and serious DIYers know that you need a good quality hole saw if you want to get a smooth, accurate hole. The McJ Tools 3/4″ HSS M2 hole saw will deliver the results you require. Fashioned from high-speed steel, this hole saw will last cutting the perfect hole through tough materials like sheet metal, steel, copper, and cast iron. If a liquid coolant is used during the cutting process, this hole saw is capable of cutting over 100 holes through metal plates. This drill bit is designed to see you through project after project, leaving no burrs behind to clean up. You’ll notice that by drilling slower, you can still achieve fantastic results. Just make sure to keep the drill bit adequately lubed throughout the process to help keep it cool. The sharp teeth also help to ensure that you’ll be getting a clean cut every time, with no hassle and no fuss. Features:
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McJ Tools 3/4 Inch HSS M2 Drill Bit Hole Saw for Metal, Steel, Iron, Alloy, Ideal for Electricians, Plumbers, DIYs, Metal Professionals
3. Drill America – KFDRSD1 1″ High Speed Steel Drill BitThe KFDRSD series of drill bits from Drill America are manufactured using M2 premium-grade, high-speed steel for heavy-duty use in materials within the iron and steel categories, like stainless steel, iron, aluminum, and sheet metal. The KFDRSD1 1″ High Speed Steel Drill Bit has a 135 degree, self-centering, split point tip that in addition to reducing thrust when compared to a standard 118-degree tip, this drill bit will not “wander” over the material. To facilitate a wide range of different drill chuck sizes, this one-inch drill bit has a three-flat, round, half-inch reduced shank, that will minimize any adjustments when changing tools. The overall length of this drill bit is six inches, with a three-inch flute length, and has been precision ground to give a high degree of concentricity between the body diameter and the shank, making it perfect for low and medium strength material drilling. The surface of the bit has been given a distinctive black and gold treatment specifically for drilling stainless steel and other hard metals. The cutting direction is right-hand, but if it is run in reverse (counterclockwise), then the spiral flutes will clear any chips out of the cut/hole, reducing clogging. Features:
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4. BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit SetThis 14 piece cobalt drill set from Bosch contains drill bits engineered using M42 alloy, which contains 60% more cobalt than M35 drill bits. They deliver a lifespan that is 10 times longer than standard bits, and they are able to withstand high temperatures for longer periods of time. They feature a thick web-helix design for fast removal of material and also increased stability. Perfect for drilling stainless steel and other high-density materials, they can also be used on common, everyday materials like plastic, light metals, and wood. The split-point tips allow easy starting, no wandering, and they eliminate the need for a center punch. They have a three-flat shank of sizes 1/8th inch and larger delivering a superior grip on the bit, and the tip is surface-hardened to pierce abrasive, tough metals. With bits ranging in size from 1/16” to 1/2″, each of the 14 bits has the size stamped on the shank so you can see at a glance which to choose for the job in hand. To make sure you select the correct bit, the handy storage case also shows the size on the top of the storage rack. Features:
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BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set
The other drill bits for stainless steel that we evaluated but didn’t make our top list of recommended drill bits: 5. Neiko 10194A Titanium Step Drill BitThe Neiko 10194A titanium step drill bit provides you with ten drill bits in one. The ten steps allow you to drill holes from 1/4“ up to 1-3/8” in increments of 1/8”. Manufactured from traditional high-speed steel, then coated with titanium, they are durable and capable of drilling through materials such as aluminum, stainless steel, copper, plastic, and much more. It has a tri-flat shank, allowing any power drill to hold the bit securely in place, giving you the confidence to work safely. It also features a double fluted design that allows the waste material particles to escape the drilling area and gives a cleaner drilling operation. As you drill into the material, you can feel the bit stop at each step until you reach the desired hole diameter, meaning you should never drill a hole bigger than you actually need. The tip of the bit has a 135-degree split point that allows you to cut into materials faster and also makes sure that the cuts are sharp throughout the range of suitable materials. The design of the drill bit also means that only a small amount of pressure is needed to cut into the material and it deburrs as the drilling progresses. Features:
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Neiko 10194A Titanium Step Drill Bit, High Speed Steel | 1/4 to 1-3/8 | Total 10 Step Sizes …
6. Hymnorq 12mm Metric Twist Drill Bit Set of 2pcsHymnorq brings you a pair of 12mm metric twist drill bits, made from M35 Cobalt steel. Finished with a bronze oxide coating, they will cut faster and last up to 12 times longer than standard HSS drill bits. They have self-centering 135° quick-cut split pilot points that will penetrate the metal with only light pressure. When you start to drill, these bits will not “wander” or “skate” about the surface. The bits have 2 twist flutes for a high waste metal removal and a straight, round shank to fit a standard drill chuck. The end of the shank has been chamfered to give an easy, yet firm hold. They also feature a heavy-duty, fully ground body construction for minimal burring and diameter accuracy. Each drill bit measures 5.94” in length, has a 3.98” working length, and is suitable for use in a power drill or a drill press. They can be used successfully when drilling non-heat treated metals, including galvanized pipes, and iron, but they are not intended to be used on hardened steel or high carbon steel. Features:
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Hymnorq 12mm Metric Twist Drill Bit Set of 2pcs - Jobber Length Fully Ground Straight Shank – 5% Cobalt M35 Grade HSS-CO, Extremely Heat Resistant - Suitable for Stainless Steel Cast Iron
7 – NEIKO 10235B Silver and Deming Drill BitThis 13/16” pro-grade high-speed steel drill bit from Neiko is an all-purpose reduced half-inch diameter chiseled shank that will fit any drill chuck type. The shank is tri-flat constructed to give a tighter grip in the chuck to give maximum security when drilling precision holes. The 135-degree split point is self-centering and is designed to increase the cutting speed without the need to drill pilot holes. It also prevents slipping and clears debris, chips, and particles away faster. The high-speed steel construction will ensure sharp and precise results while at the same time prolonging the lifespan and durability of the drill bit. This versatile drill bit, although ideal for drilling through stainless steel, can also be used to drill holes through a multitude of materials including wood, MDF, polycarbonate, etc., making it one drill bit that you should carry in your toolbox. It comes with a distinctive black and gold finish and is supplied in a storage tube for protection. Features:
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NEIKO 10235B 13/16” Drill Bit for Metal, 1/2” Shank, Silver and Deming, 135° Split Point, High Speed Steel Drilling Bit for Metals, Wood, Plastics, Composite Materials
8. HSS M35 Cobalt Twist Drill BitsA pack of five 3/8” HSS twist drill bits from Beili Tools can be the perfect addition to your toolbox. Specifically designed for hard steel drilling, their thick web helix guarantees fast removal of waste material combined with an increase in efficiency and performance. Manufactured with high-speed steel plus 5% cobalt, these drill bits are each made to the highest standards and specifications. Their split point tip will start drilling upon contact without any slipping, walking, or skating, and without any center punch required. The five drill bits come in a plastic storage box with a flip lid, and each drill is kept within its own slot, making transportation simple. Each bit has an overall length of 4.6 inches with a flute length of 2.95 inches. It’s important to note that, according to the manufacturer, the imperial size of 3/8” is purely for reference. 3/8” converts to 9.525mm and the actual diameter of these drill bits is 9.45mm, so they advise confirming the size you need prior to ordering. Features:
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BEILI TOOLS HSS M35 Cobalt Twist Drill Bits, Pack of 5 (9.5mm, 3/8")
9. BOSCH CO2143 1/4 In. x 4 In. Cobalt Drill BitThe Bosch Cobalt 1/4-inch drill bit is manufactured with M42 alloy that contains 8% cobalt. It is a hard-core cobalt bit that delivers a lifespan up to four times that of a standard bit, are jobber length, and can withstand high temperatures, up to 1,100 degrees Fahrenheit for extended periods of time. The BOSCH Cobalt Drill Bit has a thick web-helix design to remove waste quickly and to provide stability when drilling. It also has a three-flat shank for a better grip, and there is no need for a center punch since it has a surface-hardened, 135° split-point tip that prevents slipping on the material being drilled. Not only is this cobalt drill meant for drilling hard metals, but it is also a general-purpose drill bit and can be used on wood, PVC, and plastics, making it a very versatile piece of drilling equipment. Features:
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BOSCH CO2143 1/4 In. x 4 In. Cobalt Drill Bit
If you are looking for a professional twist drill that drills faster and has a long lifespan, then the Champion Cutting Tool Brute Platinum XL12 Silver & Deming bit may be the answer. Manufactured in the USA using premium high-speed steel, they have superior strength and stability than regular S & D drill bits. Their BlackGold surface treatment will hold lubricant much better for longer, smoother drilling, and they will enter the material more accurately because of their self-centering 118° split point tip that goes a long way to prevent the drill from skipping across the surface of whatever material you are drilling. If your drill has a chuck that has a maximum capacity of 1/2″, then Champion has you covered. This drill bit has a half-inch reduced shank allowing you to use it in hand-held drills or a drill press. The overall length of the bit is 6”, with a 3-1/8” flute length. Because of the attention to detail in the manufacturing process, these drill bits will allow you to drill accurate and precise holes. Features:
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Champion Cutting Tool BlackGold XG12-17/32 Silver & Deming 1/2" Shank Drill: MADE IN USA
FAQs about Drill Bits for Stainless SteelWhat is the best type of drill bit for stainless steel? The best type of drill bit for drilling stainless steel is commonly thought to be one made from cobalt. Cobalt drill bits are manufactured using five to eight percent cobalt in the steel alloy composition, resulting in a hardness that will not lessen when covered with a protective coating. Cobalt bits can be sharpened without any loss in their strength, as although they look as if they have a coating on them, the distinctive “gold” color is part of the manufacturing process. Titanium bits, on the other hand, are made with a metal core and are coated with titanium. The titanium prevents overheating, but with use, the coating will diminish resulting in a loss of heat resistance. If you attempt to sharpen a titanium drill bit, you will remove the coating rendering the bit all but useless. This is because when you drill through metal with a titanium bit that has lost its protective coating, the metals get hot extremely fast, and no longer do the job. If you are looking to drill other materials like concrete or stone, then be sure to check out what we think is the best drill bit for concrete as of 2022. What do the Metal Compounds and Coatings Mean for Drill Bits? The material or compound that drill bits are made from and the coatings that are applied to them are important factors in the lifespan and performance of the bit. High-speed steel (HSS) drill bits are made from very hard carbon steel. Typically, HSS consists of carbon steel alloyed with tungsten or molybdenum, together with percentages of chromium, vanadium, and cobalt. Carbide is added to the tips of hardened steel bits and can disperse heat very quickly. This means that they will keep their cutting edge longer than other bits. However, carbide is brittle and if not handled correctly will chip. When Cobalt is added to a drill bit, they become extremely hard and are used for drilling stainless steel and other thick metals. Cobalt isn’t damaged by heat as much as other compounds, but it is also brittle and could be marred accidentally. Coatings are added to drill bits to help reduce friction and increase the resistance to heat. Black Oxide is the most common coating used on high-speed drill bits to provide heat resistance and protect against rust, corrosion, and water damage. Titanium Nitrate reduces friction, increases resistance to heat, and extends the bit’s lifespan by up to five times. Can you sharpen drill bits? Yes, you can sharpen your drill bits. There are many helpful tips available showing, in some detail, how to sharpen a drill bit. The most common ways to sharpen drill bits are using: An angle grinder:
Diamond Files:
A bench grinder:
A drill bit sharpener:
A drill-powered sharpening tool:
What are the benefits of using a specific type of drill bit for stainless steel? Stainless steel is an amazingly tough metal. It is an alloy composed of iron, chromium, and sometimes, nickel plus other metals, and is best known for its properties of strength and the ability to ward off corrosion. To be able to drill through stainless steel you have to use a drill bit that is stronger. The best type of bit for that job is a cobalt drill bit. Cobalt drill bits are exceptionally strong and are made to last. They are designed to be operated at higher speeds than an HSS drill bit, and with their heat resistance properties, cobalt bits will work for extended periods of time without the need for cooling or having to use cutting fluid. Another benefit in using a cobalt drill bit is that in addition to stainless steel, they can cut through other hard metals, such as bronze, cast iron, and titanium. It has been known for them to drill through weld seams as well. A good quality cobalt drill bit needs to be maintained and looked after if it is going to perform as it should. It will prove to be well worth the investment you make in them time and time again. Related: Best Hack Saws for Metal Best Knee Pads for Work Best Portable Air Compressor for Home Garage
Does stainless steel require a special drill bit?You need special bits for stainless steel because those bits are usually made out of durable construction such as high-speed steel, titanium nitride, and cobalt. It will also have to withstand the drilling (the wear) and the extreme heat from drilling whereas regular bits probably won't be able to handle it.
What is the easiest way to drill through stainless steel?Start with a sharp drill and have it turning as slowly as your drill or drill press will allow. I set my drill press to its slowest speed or run my portable drill as slow as the trigger will allow. You need to exert a lot of pressure on the drill bit—as much as it will bear.
What will drill a hole in stainless steel?1: Go for Solid Carbide Drills. “Stainless steels generate a lot of heat, and solid carbide drills are not only more heat-resistant than high-speed steel [HSS] and cobalt but are also harder and stronger,” George says. “That, and they're usually equipped with coolant through the tool,” he continues.
What speed should you drill stainless steel?Feed and speed rates should be reduced up to 45-50‰ when drilling holes deeper than 4 drill diameters.
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Recommended Speeds for Carbide Tipped Holecutters.. |