What is the best drill bit for metal? Choosing a drill for metal: product types, marking and color

The need to process various metal products arises not only among professionals, but also among many home craftsmen. When performing such processing, you cannot do without special tools, one of which is a drill for metal. On the modern market you can purchase already completed sets, which include products of different diameters and lengths, or opt for a single copy that corresponds to the required geometric parameters and mechanical characteristics... In both cases, the question arises of how to distinguish high-quality drills from low-quality ones and choose a tool that does not have to be changed after each machining cycle due to its breakage or critical bluntness of the cutting part.

Drilling in metal is labor intensive and difficult process requiring a responsible approach to the selection of cutting tools

Varieties and design features

Exists different kinds drills for metal, differing from each other in design features and functionality. It is important that with the help of drills designed for performing metal work, you can successfully drill holes in other materials, which include:

1. wood and materials based on it;
2. different kinds polymer materials;
3. ceramics;
4. brick;
5. concrete.

The design of drills for metal work is specially developed to solve certain technological problems and taking into account the characteristics of the material for which they will be used. That is why experts advise those who do not know how to get an idea of design features such a tool.

It is very important not to get confused in the variety of types of drills for metal.

Drills designed for metal processing consist of the following elements:

• cutting part, which performs the main work on cutting metal;
• a shank with which the tool is fixed in the chuck of the equipment used;
• working surface responsible for removing chips from the processing area.

Depending on their design, drills for metal processing are divided into several categories:

1. flat;
2. spiral;
3. crown;
4. conical.

Flat

Drills, the working part of which has a flat shape, are also called feather drills. Their most significant advantages are:

• insensitivity to distortions, which any drill is subject to during processing with its help;
• simplicity of design;
• low price.

If you list the main disadvantages of the tools of this type, then these should include:

• inability to use large diameter holes for drilling;
• lack of automatic removal of chips from the processing area (the device and geometry of such drills do not imply this option).

Spiral

Twist drills are the most common tool used to make holes in metal. By its design, a twist drill is a cylindrical rod, on the lateral surface of which spiral grooves (one or two) are made, covering the entire working part of the tool. It is precisely such elements of the twist drill as the helical grooves on its lateral surface that ensure the removal of chips from the drilling zone.

Depending on the design and purpose, the twist drill can belong to one of the following categories.

• General purpose metal drills. Drills in this broad category can be up to 80mm in diameter. They are actively used both in production and at home.
• Left hand twist drills with very limited area application. They cannot be dispensed with in cases where a bolt with a broken head must be drilled out of a threaded hole or fastener which cannot be unscrewed in any other way. To the question of how to distinguish a drill of this type from a standard right-hand drill, there is a simple answer: just look in which direction its spiral groove is twisted.
• High precision drills. They are chosen by those professionals or home craftsmen who are not interested in good, but excellent result upcoming processing. Instruments of this type can be recognized by the A1 designation. They allow you to create holes, the diameter of which is maintained with an accuracy of a fraction of a millimeter.

Crowned

Drills of this type, made in the form of a metal cup, on the end working part of which there are cutting teeth, are used to create large-diameter holes in the metal. The cutting teeth of such drills can be made of carbide or diamond-coated.

Conical

This category includes tools with a smooth and stepped working surface. Used to make holes in metal products of small thickness, they provide easy centering of the hole at the very beginning of drilling, which cannot be said about a tool with a cylindrical working surface. However, the main advantage of using stepped conical drills is that with the help of one such universal tool, holes of different diameters can be obtained.

Among the drills for metal, tools should be distinguished with which you can make holes even in high-strength materials.

Cobalt

These are instruments based on a cobalt alloyed base. Cobalt gives the drill high strength, as well as resistance to deformation under thermal and mechanical stress. Due to these characteristics, cobalt-type tools are successfully used for drilling holes in products made of high-strength and ductile metals and alloys. Quite high cost, which differ cobalt drills, is fully justified by their characteristics.

Carbide

On the cutting edge of this type of drill, carbide inserts are fixed. In this case, the main body of the tool is made of. For the production of inserts, carbide alloys are used, which are distinguished by extremely high hardness and wear resistance. Using such drills, the cutting inserts of which are sharpened during the manufacturing process and do not undergo further regrinding, it is possible to successfully drill especially hard metals and alloys, as well as products made of metal of large thickness.

When choosing drills for metal, you must know exactly what technological tasks they will be used for, and also take into account the characteristics of the material in which you need to make the hole. To choose a tool that will meet your goals, you must also pay attention to its following parameters:

1. surface color;
2. quality of sharpening and symmetry of structural elements;
3. working diameter;
4. conformity of the form to typical parameters;
5. characteristics of the material of manufacture;
6. appointment and functionality;
7. reputation of the manufacturer.

When deciding which drills to choose for metal processing, the characteristics of the equipment with which they will be used should also be taken into account.

So, if it is necessary to drill a large-diameter hole in a metal product, for which powerful low-speed drills are used, you will need a tool that can be used with them.

What does the color of the drill surface indicate?

The color that the surface of the drill has for metal is a parameter by which one can judge the quality of the presented tool. Thus, various drill colors for metal means the following.

Grey

This color has the surface of the drills, which are distinguished by the lowest quality and, accordingly, the lowest cost. Tools with a surface of this color do not undergo any additional processing that could increase their hardness, resistance to deformation and combustion. It should be borne in mind that when drilling hard metal they may not even be enough for one hole.

Black

The surface of the drill acquires this color if it is treated with superheated steam. As a result of such processing, the strength and wear resistance of the tool increase, and, as a result, the resource of its use increases. The cost of such products is slightly higher than gray ones, but it is quite affordable for most consumers.

Light golden

This color means that the drill has passed the tempering procedure after manufacturing. Such heat treatment allows not only to eliminate residual stresses in the internal structure of the tool, but also to improve its strength characteristics. Even in the photo, such a drill looks presentable and immediately inspires confidence in the quality of its performance.

Bright golden

This is the color of the best metal drills, the material of which contains titanium. Due to the content of this element in the composition of the steel from which the drills are made, when using them, the level of friction is reduced, which has a positive effect on the duration of their effective operation. Naturally, drills with a bright golden surface are quite expensive.

When choosing drills of a certain type, one should proceed from how often they will have to be used for metal work. It is also necessary to take into account the requirements for the accuracy and quality of the holes that must be created in the metal product.

For frequent and intensive use in order to make quality and accurate holes, it is better to choose the more expensive, but also the highest quality, bright gold drills.

Purchasing a cheaper tool will result in frequent changes to the tool and this will negate the initial savings. It is advisable to choose the more affordable types of drills, the surface of which is painted in black or light golden color, in cases where it is required to perform one-time work associated with drilling metal.

Size classification

Modern manufacturers produce drills for metalwork in a wide range of working sizes. In order to make it easier for the consumer to understand such a variety, the corresponding regulatory document (GOST) provides for the division of drills for metal into various types by size. So, the following categories of tools are distinguished:

• short series, the length of which is in the range of 20–131 mm, and the diameter is 0.3–20 mm;
• elongated, the diameter of which, like the short ones, is in the range of 0.3–20 mm, and the length is 19–205 mm;
• long series, the length of which can be in the range of 56–254 mm, and the diameter - 1–20 mm.

The classification of drills depending on their length and diameter is regulated by the provisions of several normative documents- GOST 4010-77, 10902-77, 886-77.

How to understand the labeling

Marking helps to choose the right tool for drilling products made of metal. It is not difficult to understand it. The marking of drills, depending on their working diameter, contains the following information about the presented tool.

• On miniature products, the diameter of which does not exceed 2 mm, no marking is applied at all.
• The marking of drills, the diameter of which is in the range of 2-3 mm, contains information about the grade of steel from which they are made, as well as the size of their cross-section.
• The marking of drills for metal with a diameter of 3 mm or more contains the following data: working diameter, steel grade, imprint of the manufacturer's logo.

By alphanumeric designation grade of material of manufacture, you can get an idea not only about the category of such an alloy, but also about the content of additional substances in its chemical composition.

So, the letter "P" in the marking of drills for metal means that they are made of high-speed steel. The composition of steel alloys used in the manufacture of drills for metal work may contain additional substances that improve them. performance characteristics... Such substances, in particular, can be molybdenum, which is denoted by the letter "M", and cobalt, denoted in the marking by the letter "K".

Foreign manufacturers include more detailed information about the presented instrument in the labeling. Having decided to purchase such drills, you will receive the following data from their marking:

• name of the country of origin;
• manufacturer's trademark;
• steel alloy grade;
• working diameter of the tool;
• accuracy class;
• short recommendations on materials that such a tool can handle.

Popular brands of tools from foreign manufacturers

In order to know, when choosing drills of foreign production, which ones are better suited for solving certain technological problems, it is enough to have an idea of ​​the material to be processed with their help. So, foreign manufacturers give the following recommendations for choosing a tool with a specific marking.

HSS-R and HSS-G

It is recommended to drill with tools with such markings:

• steel parts made by simple casting and injection molding; products made of carbon and, the strength of which does not exceed 900 N / mm 2;
• products from metal alloys containing aluminum, graphite, copper, nickel, zinc (bronze, brass, cupronickel, etc.);
• billets from gray and ductile iron.

HSS-G Co 5

Drills with this marking can be used for processing metals, the strength of which reaches 1100 N / mm 2. Such metals, in particular, can be the following steels:

• carbonaceous;
• stainless;
• thermally improved;
• acid-, heat- and heat-resistant;
• alloyed.

HSS-G TiAN / TiN

If there is such a designation on drills for metal, it means that titanium-aluminum-nitride spraying is applied to their working part. Such a coating significantly increases the resistance of drills not only to corrosion, but also to wear, which contributes to an increase in their operational life... Tools with this marking can also be used for processing metals and alloys with strengths up to 1100 N / mm 2. Manufacturers recommend using the following types of drills for processing:

• malleable and gray cast iron, in the structure of which graphite inclusions have a spherical shape;
• copper-based alloys (brass, bronze, cupronickel);
• steel billets obtained by casting (including injection molding).

Top manufacturers

When choosing a tool for creating holes in metal, it is important not only to know what drills are, but also to understand the brands on the domestic market. Both its durability and the processing results that will be performed with its help depend on who exactly produced the drill.

• enterprises that produced drills on the territory of the former Soviet Union(their products, which are getting smaller on the market every year, differ high strength, reliability, wear resistance and, accordingly, durability);
• Ruko (drills produced under this brand can be made with cross sharpening and different types spraying and are characterized by an excellent ratio of price and high quality);
• Bosch (the brand itself under which such drills are produced already says a lot about their extremely high quality and reliability);
• Haisser (drills of this brand due to the peculiarities of their design and the use of special alloys for their manufacture, they are able to successfully cope with their tasks even under extreme loads);
• "Zubr" (under this domestic trademark, affordable, but high-quality and reliable drills for metal work are produced).

How to sharpen

In order to properly sharpen the drill in case of dullness of its cutting part, you must adhere to the following recommendations.

Drilling in cast iron, ferrous and non-ferrous metals requires careful selection of equipment and equipment with sufficient power. Drills designed for soft materials will not be able to handle metals. Work will be slow, finished holes will be of poor quality, and drills will be subject to excessive wear and tear and need to be replaced regularly. All these problems can be avoided if you decide which drills for metal are better.

Main criteria

Universal drilling tool various materials does not exist, and even superficially similar metals may have completely different hardware requirements. High-quality drills from reliable manufacturers are quite expensive, but with the right choice they can serve for a very long time, while saving a lot of time and money at work.

When choosing a tool, you need to pay attention first of all to the following points:

If you decide on the choice, each time focusing on these points, the likelihood of getting low-quality products is minimized.

Drill type selection

There are three main types of drills: spiral, stepped and conical (countersinks). The fourth type is somewhat less common - ring cutters, also called core drills. They are designed to create large holes up to 150 mm.

To decide on one of the types among these options, you need to focus on the following selection criteria:

1. Required finished hole diameter.
2. Penetration or through hole drilling is required.
3. Steel grade, product appearance and other features of the processed metal.
4. Required hole depth.
5. Characteristics and features of the tool used for work: drill, screwdriver, puncher, etc.

You should not buy drills in whole sets if they are required in isolated cases and for domestic purposes: such an acquisition would be economically unjustified. For domestic purposes, it is advisable to purchase goods piece by piece, for specific needs, and for professional purposes - in sets, depending on the field of activity.

Shank selection

A shank is the part that is attached to the chuck of a drill or other tool. There are three common types of fasteners: tapered, cylindrical, and hex. Good metal drills can have any type of fastening: this only affects the tool that can work with a particular tooling.

Based on this, for hand tool it is advisable to choose drills with hex shanks. It is important to remember that it is impossible to replace one type with another, so the final say rests with the equipment used. The compatibility of the equipment with the equipment guarantees maximum work efficiency.

Alloy composition and markings

The cutting part of the tool will only be able to drill the workpiece or the working surface if it is significantly stronger than it. To make it easier to determine which products are made of what, a special marking of drills for metal is performed. In addition, many types of spraying and alloys are immediately recognizable by color.

How drills for metal are marked:

Carbon is not indicated in the marking, since it is always present in the original raw material. The same is with chromium, although its content can be up to 4%. Domestic marking is even simpler: next to each letter denoting a metal, there is a number indicating its percentage in the alloy. For example, the designation P7M6K6 indicates 7, 6 and 6% content of tungsten, molybdenum and cobalt, respectively. The letter F may still be found - vanadium, but the cobalt version and alloys with molybdenum and tungsten are more common.

Drills for metal: dimensions, table (data on DIN marking - import designation for high-strength steel, as HSS).

Color decoding

All of the options listed on the shelves in the store can be divided into four color categories. Each color says a lot about the quality of the rig and its intended performance.

The choice should be approached from the point of view of practicality. If the store has inexpensive options black, they will perfectly cope with everyday tasks and one-time work. It makes sense to spend money on high-quality products of gold shades if there is a lot of work and tens or hundreds of holes in the metal.

Popular manufacturers

There are a number of manufacturers whose products you can trust. There are few of them, and most of the companies are well-known and well-known.

The density of the metal is so high that it is necessary to use special tools and mechanisms to process it. In order to make a hole in this material, drills are used and drilling machines, in which the main cutting element is drills.

What are the best metal drills? Difficult to define, as universal products are suitable for all types of processing metal products, does not exist. Experienced master will be able to "by eye" determine the type of metal and quickly select a suitable cutting tool for processing.

A beginner in this business needs to start from scratch. First, study the classification of drills and their scope of application, because best models- these are products that are ideal for processing a specific type of metal.

What are the drills, both by marking and outward appearance to find a product suitable for work, find out in the article.

To choose the best models, you need to understand the types of drills.

Spiral

Classic, cylindrical drills, which are most often used for drilling metals. Usually spiral products are made from HSS steel.

The material is high quality cutting type steel, so the gimbals made of it are distinguished by high strength and durability.

Conical (stepped)

The cutting surface has the shape of a cone, for which given view drills and got its name. Conical gimbals are used for making holes in thin metal, as well as for correcting defects from others. cutting tools.

The energy consumption for making a hole in this way is several times lower due to small area contact of the tool with the processed surface.

The advantage of using this type of drill over others is the production of large diameter holes. At the same time, it is possible to obtain better quality edges than when working with spiral models.

Perovs

A special type of flat gimbals with replaceable working edges is used for drilling metal. Such products allow you to make high-quality, perfectly straight holes.

No skewing during drilling and the ability to make a large hole in various metal structures, allows many craftsmen to abandon the use of spiral products.

The low cost of nib drills allows in many cases of metal processing to call them the best for drilling holes.

These are the main types of drills used for making holes in metal structures.

Classification of drills by material of manufacture

Which drills for metal are the best when drilling especially strong alloys, the answer is quite simple:

1. For processing such material, you should choose products with a plate of increased hardness on the cutting edge. These are the best for carbide applications.
2. The price of such products is low due to the fact that the main body of the cutting tool is made of ordinary tool steel.

Drills made of cobalt alloyed metal have good characteristics.

They perfectly tolerate increased mechanical stress and excessive heating of the working surface during operation. The cost of the products is high, but if it is necessary to make holes in the carbide, then the cobalt counterparts are the best for the job.

Titanium drills are not inferior in strength to cobalt drills, and show even better results when drilling alloy steels and non-ferrous alloys.

When used correctly, titanium models retain their factory-cut for a long time, which will allow much more work to be done.

Inexpensive metal drills are made from ordinary high-speed steel P9 and P18. The cutting tool does an excellent job of its function, but the working surface quickly becomes dull, especially when a certain temperature threshold is exceeded.

Marking of cutting products

Drill bits for metal are required to determine the type of steel from which the cutting tool is made. The product also indicates its diameter, accuracy class and manufacturer (country). Only spiral gimbals with a diameter of less than 2 mm are not marked.

In other cases, drill markings can have the following meanings:

• P9 - made of high speed steel with a tungsten percentage of 9%.
• Р9К15 - indicates the presence of cobalt in high-speed steel in the amount of 15%.
• Р6М5К5 - denotes the presence of a complex composition of cutting steel containing tungsten, cobalt and molybdenum.

Imported products have the designation HSS, which can be used to determine the composition of the material from which the drill was made. The HSS drill - the decoding of which will be given below, is used with an additional letter, which determines the presence of an alloying metal.

HSS Marking:

• HSS-E - contains cobalt. It is used in the processing of highly viscous metals.
• HSS-Tin - has titanium sputtering, which significantly increases the hardness of the working surface, and the temperature resistance of the material increases to +600 degrees.
• HSS-E VAP - cutting tools are used for processing stainless materials.
• HSS-4241 - designed for drilling aluminum.
• HSS-R - have maximum durability.

From the marking of the cutting tool, you can determine for which metal and in which mode the drill can be used. If the marking is not visible, then the purpose of the drill can be determined by the color of the product.

Visual identification of drill type

By the appearance of the cutting bit, you can determine the type of material from which the products are made and thereby find out the mechanical strength of the sample. By color, you can determine the composition and workmanship.

Grey

Drill gray are made of metal that has not undergone any additional processing.

The quality of the instrument, in in this case, leaves much to be desired, but such products are quite suitable for one-time use.

Black

This color indicates that the tool has been treated with superheated steam. In the process of processing, the product acquires greater strength.

It perfectly tolerates numerous heating and cooling cycles of the metal, and also maintains the sharpening of the working surface for a long time.

The price of black drills for metal is not much higher than gray products, therefore, if you have a choice, when buying, you should give preference to tools of this type.

Dark golden

This color indicates that the cutting tool has been tempered. This type of processing significantly increases the mechanical strength of the product by reducing internal stresses.

A released drill can successfully process metals of increased strength, therefore, if you have to drill too hard alloys, it is recommended to purchase a similar model.

Bright golden

The bright golden color indicates that the metal used in the production was made with the addition of titanium.

Despite the high cost of such models, it is much more practical to purchase a high-quality drill than to use cheap cutting tools, which, when complex work ah will need to be used in large quantities.

Thus, it is not difficult to determine the quality of products in appearance and decide which drills for metal are better to buy.

Size classification

In order to choose the best drill and at the same time not overpay, it is enough to know what lengths it is customary to divide these products into. If the drilling of metal does not require the production of deep holes, then the purchase of too long models will lead to cost overruns.

It is customary to classify drills by length as follows:

1. Short, 20-131 mm long. Tool diameters are in the range of 0.3-20 mm.
2. Elongated, the length is 19-205 mm, and the diameter is 0.3-20 mm.
3. Long series with a diameter of 1-20 mm and a length of 56-254 mm.

When performing drilling work of various depths, you should select the tool that is most suitable for the specific task.

Top manufacturers

To purchase drills and be sure that the declared characteristics fully correspond to reality, you must choose the right manufacturer.

Firms that value their reputation do not sell products of inadequate quality. Therefore, when choosing drills for metal, preference should be given to manufacturers who have been on the market for a long time.

Among the newcomers, there may also be decent producers. But in order to find out that there is a good quality product on sale, you need to make a purchase, which is often a "lottery".

The best manufacturing companies:

1. Bosch - the products of the German company have long proven themselves only on the positive side. Despite the rather high price of products, when purchasing Bosch drills, there is no doubt about the excellent quality. It is convenient and profitable to purchase the tools of this company in a set.

Whichever set of drills you take, any one will contain only the highest quality products that will last for many years, provided they are stored and used correctly.

2. "Zubr" is a domestic manufacturer, whose products are maximally optimized in terms of price-quality ratio. You can purchase the products of this company both in a single copy and in the form of a set. The latter option will significantly save cash despite the significant cost of the kit.

3. Soviet-made drills - this category of cutting tools can be attributed to the "endangered species". With due diligence, you can purchase a rarity that has unsurpassed technical characteristics.

Drill- a very popular tool not only in different areas activities, but also in everyday life, in daily use. A very wide assortment of drills from different manufacturers is sometimes just put into a stupor for the average buyer. Let's find out how to choose a drill for metal and which manufacturer's drills should be preferred.

Drills for metal

Metal drills are used to cut holes in unalloyed and alloyed steel, cast iron, non-ferrous metal, etc. This type of drill has a spiral shape, hence the corresponding name - twist drills. Twist drills have two longitudinal flutes that deflect the chips during drilling. There are several types of twist drill shanks - tapered, hexagonal and cylindrical. Conical ones are inserted directly into the machine, cylindrical ones - into a special chuck.

If you are interested in the question: "Which drills for metal are better?", When choosing a drill, pay attention to the color, it will say a lot about the quality.

Choosing a quality drill by color

If the drill is black, then when finishing superheated steam was used. This drill has increased wear resistance.

If stress relief was used during finishing, the drill will have a faint golden hue.

High-quality metal drills have a bright golden hue - a layer of titanium nitride is applied to the drill. This is very quality tools, have high strength and reduced friction. The mute is more expensive than the others, but also higher in quality than the rest.

The regular gray drill (the cheapest) has no processing at all. The lowest price and the same service life, and nothing else.

Look at the photo of drills for metal in order to finally remember the types of colors and their inherent characteristics.

Drill marking for metal

The marking depends on the diameter. Drills up to 2mm are not marked, on drills up to 3mm they indicate the steel grade and diameter, thicker drills can carry information about the manufacturer and accuracy class.

Drill marking starts with the letter P - high speed steel. The content of various substances in the alloy is also indicated in the form of a numerical value. For example, K6 is part of cobalt, M3 is the content of molybdenum. On imported drills, the marking is in the form of HSS or Din values.

Having learned the characteristics and types of drills, you now know exactly how to choose a drill for metal. We will only give examples of quality drills that are widely used by professionals.

RUKO twist drills for metal TL 3000 (HSS-G, HSS-E, HSS-G TiN, HSS-G TiAlN)

Drills for metal ruko lineup TL 3000 is known to consumers as a high quality material at an affordable price. Drill diameter - from 3mm (cross-sharpened according to DIN 1412 C). The drills have a sharpening angle of 130 °. Depending on the specific model, they have coatings of titanium nitride, titanium aluminum nitride, etc.

Multipurpose drills, great for deep drilling. Best suited for materials that generate long to medium chips.

HSS-G drills are excellent at drilling carbon and alloy steels, cast iron, copper and aluminum alloy.

In addition to carbon and alloy steel, HSS-E drills stainless and acid-resistant steel, as well as copper and aluminum alloy.

HSS-G TiN and HSS-G TiAlN are suitable for all of the above materials as well as titanium alloys.

Metal drills BOSCH HSS-CO

The drills of the BOSCH company of the HSS-CO range are made of high-speed steel according to all standards. The drills have an oxide coating that quickly removes chips during drilling. The standard 135 ° chisel edge with mesh grinding is suitable for almost all types of work.

Cobalt alloying improves the strength and heat resistance of the drill. The tensile strength is 1000N / mm2, which allows it to handle most types of steel and alloys, as well as to cope with heavy production tasks.

Accuracy class h8 provides the required holding of the outer diameter.

HAISSER metal drills with titanium coating

One of the most powerful drills that are used under extreme stress in domestic and industrial environments. The drills are cross-sharpened. The titanium coating provides maximum cooling to handle the toughest conditions. The main application of drills is found in the field of industrial and complex work. Corner 135 mesh grinded. Titanium nitride coating gives minimal friction and reduced cold welding... Thanks to their high wear resistance, the drills have a uniquely long service life.

Drill for metal BISON "Cobalt"

The ZUBR metal drill is made of high-speed steel R6M5K5. Has a cylindrical shank. In terms of strength class, it belongs to category A1. The use of cobalt (5%) in the manufacture gives this drill extra strength and resistance to wear.

Used drills "Cobalt" for drilling non-ferrous metals, of stainless steel, hard-to-machine ductile steel, etc. The drills are made in accordance with GOST 10902-77. The price of the BISON "Cobalt" drills is quite consistent with the quality of the product, so many customers make a choice in favor of this product.

Metal drills are indispensable tools that are used in manufacturing and at home for drilling holes in objects with increased strength. When choosing this kind of tool, first of all, it is necessary to focus on its declared performance characteristics, material of manufacture, sharpening angles and coating. Experts first of all recommend paying attention to the sharpening angles of cutting steel. The best drills for metal, the rating of which is presented below, have proven themselves with better side and got the largest number positive feedback from consumers.

Irwin TurboMax 10503992

Irwin TurboMax 10503992 opens the rating of the best drills for metal. The tool is designed for such work as drilling holes in metal objects, in plastic, as well as wood. The drills are also suitable for drilling holes in stainless steel with the mandatory use of coolant. The tip of the tools included in the kit is distinguished by a special sharpening, which ensures a high drilling speed. The set includes 15 drills with different diameters and high strength. The cost of the kit is approximately 3000 rubles.

Hawera HSS-C SpiralBohrer GQ-32692

Hawera HSS— C SpiralBohrer GQ-32692 are included in the list of the best drills for metal. The set contains 25 twist drills with a diameter of d 1.0 mm - 13.0 mm x with a diameter pitch of 0.5 mm. The surface of the working devices is coated with titanium nitride, which gives them special hardness and heat resistance. The tools are made of high quality high speed steel and are fully ground. These drills boast a long service life and flawless performance throughout the entire period of operation. GQ-32692 is excellent for steel, alloy and unalloyed castings, brass, bronze, as well as castings and cast iron. You can buy such a kit for 6,000 rubles.

DeWALT DT7926 Extreme2 HSS

DeWALT DT7926 Extreme2 HSS- some of the best drills for metal, which can be used both in production and at home when working with drills. They provide the cleanest and most accurate drilling possible and also feature high working speeds. Thanks to the nanotechnological design of the tool, damage to the edges of the hole is prevented. There are three flat edges on the tip of the fixture that provide reliable fastening in the cartridge. The set includes 29 drills with diameters from 1 to 13 mm. The cost of a complete set is 5,000 rubles.

Bison MET-Sh H19 P6M5

Bison MET-Sh H19 P6M5- drills of a domestic manufacturer, included in the list of the best. They are used for drilling both alloy and carbon steel. The tools are made of high-speed steel R6M5, have a cylindrical tail and differ high precision and drilling speed. They are self-centering due to a cruciform undercut. The set contains 19 pieces of devices with a diameter of 1 to 10 mm. You can buy MET-SH H19 in an eraser box for 1000 rubles.

AEG HSS-G 4932430416

AEG HSS-G 4932430416 are some of the best metal drills in an affordable price range. The fixtures are completely ground and made of high-strength and heat-resistant steel. The cutting head of the tool is cross-sharpened with a 135 degree angle, which provides good centering without the need for a core. 4932430416 are able to withstand high temperatures as a result of heating during drilling. Suitable for work with high-alloy steel and metal with a strength of more than 1000 N / mm². The set contains 19 pieces with a diameter of 2 to 10 mm. You can buy the kit for 1,500 rubles.

Metabo Bestell-Nr. 27 094 HSS-G

Metabo Bestell-Nr.27 094 HSS— G- some of the best drills for metal work. Spiral-type tools have a cylindrical shank with a 135-degree point sharpening for fast and accurate drilling. In total, the set contains 25 pieces, the diameter of the working tools varies from 1 to 13 mm. The cost of the kit is approximately 1,700 rubles.

Enkor 25219

Enkor 25219 are included in the rating of the best drills for metal. The set includes tools of various diameters (from 1 to 10 mm). In total, the set includes 19 work items. The tip of the attachments is made of high-strength carbide alloy, which ensures high working speed and long service life. Enkor 25219 belongs to the category of budget drills designed for metal. Purchase a set from Russian manufacturer out of 19 pieces it is quite possible for 1000 rubles.

Wurth Zebra Spiralbohrersatz HSS are some of the best drills for metal work. Made of high speed steel HSS. The attachments provide maximum drilling accuracy and speed, and are also characterized by increased strength. Ideal for drilling holes in structural steel up to 1000 N / mm², cast iron and plastic. Suitable for use in vertical drilling machines and electric drills. It is recommended to use a special coolant during operation. The set includes 13 drills with different diameters, which are supplied in a plastic case. The cost of such a kit is about 700 rubles.

N802-6 attack

N802-6 attack are not only some of the best, but also the most affordable metal drills. The tools included in the kit have excellent durability and provide good speed work. A total of 8 pieces are presented in the kit. The drill diameter ranges from 3 to 10 mm. The hardness is 65.8 HRC. Н802-6 provide not only high performance, but are able to serve for a rather long period. You can buy a reliable tool kit from a Russian manufacturer for only 600 rubles.

Bosch 2607017154

Bosch 2607017154 round out the list of the best metal drills. This set is designed for making both through and blind holes in sheets of alloyed and unalloyed steel with a permissible tensile strength of 900 N / mm2, copper, bronze, plexiglass, etc. Bosch 2607017154 are made of high-strength, high-quality and high-speed steel with a titanium nitride coating. Not suitable for drilling aluminum. When working with the product, it is recommended to use a coolant to increase the service life. The kit is sold in a special plastic, shock-resistant box. A total of 25 pieces are included in the set, the diameter of the products varies from 1 to 13 mm. The kit can be purchased for about 3,000 rubles.