9 best adhesives for metal

*Overview of the best according to the editors of Healthy Food Near Me. About selection criteria. This material is subjective, is not an advertisement and does not serve as a guide to the purchase. Before buying, you need to consult with a specialist.

Metal is a very dense, heavy material, and therefore less susceptible to bonding. It is not in vain that electric and gas welding were invented for a reliable connection of iron. But if the use of such equipment is not possible in a particular situation (or it simply does not exist, it is not cost-effective to buy for a couple of joints), use a special glue for metal. In order to choose the best product, we provide you with an overview of proven adhesives with optimal characteristics and positive feedback from users.

Rating of the best adhesives for metal

When compiling the list of the best adhesives, we took into account such characteristics as:

1. setting time of the substance;

2. the composition of the drug;

3. level of toxicity;

4. ease of use of the tube;

5. resistance to alkaline or acid environment;

6. ease of use;

7. requirements for the preparation of the metal surface;

8. dosing accuracy;

9. the possibility of using the printed packaging with the product another time.

We also analyzed customer reviews to see what pros and cons of the product they highlight after testing the product in practice. All this increases the chances of choosing and buying a proven glue that will connect the metal with high quality and ensure a long service life of the joint.

Strong steel stick renewal composite 114 г

Rating: 4.9

In the first place in the list of the best adhesives for joining metal is the composite from Strong Steel Stick. The product is produced in a tube and is a gray dense mass. To seal a gap or crack, you need to cut off part of this “sausage” and heat it in your hands or warm water. The user then kneads the substance to a state of plasticity. Within 2 minutes after mixing, the composite should be applied to the metal. Due to the chemical reaction, the adhesive begins to harden. In reviews, the product is praised for its increased hardness, comparable in density to iron, which is acquired already 20 minutes after application. The material can then be processed with a file to give the seam the desired shape on the front side of the product.

“Steel Patch” can be used to repair cracks, crevices and join two sides of metal. The main feature of the product is the ability to use it in direct contact with liquid or even when immersed in water. With its help, it is convenient to seal a leak in the heating system, plumbing or to patch a leaking container.

Weicon VA 20

Rating: 4.8

In second place is glue from the German company Weicon, designed to connect metal, as well as plastic and rubber. The substance is sold in a thin tube with a narrow spout, making it convenient to apply the product exactly to the docking point. To push the composite to the exit, a rotating piston is provided at the rear. The basis of the adhesive is ethylate, and the product itself belongs to the cyanoacrylate group. In the reviews, buyers like that VA 20 glue has a low viscosity of 20 mPa * s. This provides an easy application, similar to smearing water. The paste flows well into the cracks and penetrates deep into the material, which increases the joint area.

To our experts, the product seemed to be the best for gluing metal, which is subsequently subjected to vibration loads. The product is optimal for this use, as its molecules are located far from each other, helping to maintain elasticity. When the metal is subjected to shaking, the cured adhesive compensates for these vibrations, serving as a buffer, and does not crack.

Bostik NE486

Rating: 4.8

Bostik NE486, which consists of a solvent and chloroprene rubber, also got into the top three metal adhesives. To obtain an adhesive mass, the product must be mixed with Stormoprene Curing Agen, which is supplied in a separate bottle. Customer reviews show that the mixed solution can be stored in a closed container for 4 hours. This is convenient and allows you not to rush during the execution of critical processes. Putty can be applied with a brush, spatula or a special roller. Once the product has been applied to the surfaces, the user has time to calmly prepare for joining the two parts – curing begins after only 15 minutes. For use on metal, you will need to clean the surface with sandpaper and wipe with a solvent.

We considered the adhesive to be the best due to its resistance to high temperatures after drying. When the drug polymerizes on the metal, it withstands up to +90º C with prolonged exposure. This makes it possible to use iron glued parts outdoors under sunlight or in heating systems with a hot coolant.

Weicon RK-1500

Rating: 4.8

RK-1500 glue for metal from Weicon is considered structural and is used for fastening steel parts in engineering, ventilation systems, and model building. The professional product comes in a container and needs to be mixed with the activator supplied in the kit. The basis of the product is methyl methacrylate. For reliable bonding of metal, a seam thickness of 0.8 mm is sufficient. 8 minutes after application, 50% of the strength of the joint is gained. The final fortress is reached after 24 hours. Users in the reviews like that after the final solidification, the substance is so hard that it can withstand abrasive sandblasting.

This glue can be used not only with a hot coolant, as described above, but even exposed to open fire. The manufacturer has set the heat resistance of the product at +130 degrees with constant exposure and up to +180º with short-term exposure (up to 30 minutes). This allows the adhesive to be used to seal pots and other steel containers, which are then placed on stoves to heat water.

Epoxy adhesive EpoximaxX 1.2 kg

Rating: 4.7

But glue for metal from completely natural ingredients. The product is based on epoxy resin mixed with a hardener. The agent quickly hardens and reliably holds different types of metals (aluminum, steel, copper, lead). After polymerization, the surface can be ground and polished. The cured product is UV resistant. To improve the aesthetics of the joint, it is allowed to varnish the putty. The unused balance of the two-component product can be stored in a closed container for a year.

Glue we considered the best due to absolute transparency. After hardening on the metal, you will not see yellow spots or gray marks. This is important for the front side of the product and helps to maintain an attractive design. The surface of the dried substance is also glossy and smooth, which is useful for prototyping or modeling in order to imitate water or glass on metal. If you use a product for art, you can create layers with a thickness of up to 50 mm, which users like in the reviews.

M Hi-Strength 90 (7000042449) 0.5 л

Rating: 4.6

The review continues with a one-component adhesive that does not require pre-mixing. The product is sold in a spray can with a capacity of 500 ml. In addition to metal, the tool is able to connect plastic, fabric, wood and chipboard, so the product is universal and useful in the household and workshop. Once cured, the adhesive line is resistant to liquids and can be used to seal boats and water storage vessels. Users in reviews praise the product for a quick and reliable setting, which occurs 10 minutes after application. But buyers warn that they should work with protective gloves, since the spray often gets on their hands.

In combination with its adhesive properties, we have singled out the product as the best in terms of ease of application. Aerosol spraying allows you to quickly cover a large surface area with a substance, so the product is optimal for joining sheet metal. You can hold the bottle both vertically and horizontally.

Q-Bond Mini Kit 0.02 л

Rating: 4.5

This glue is based on cyanoacrylate. The product comes in a box with four tubes inside. Two of them are the glue itself, and the other two are a filler powder with a black and gray composition. The granules provide a better color match with the materials to be bonded (grey powder is used for metal) and also act as a reinforcing compound that fills cracks. Buyers in the reviews are satisfied with the fast curing process, which takes only 10-15 seconds. Another tool is notable for its increased resistance to aggressive environments, such as oil and battery acid. If you patch a hole with a diameter of 6 mm with a composition, then it will withstand a pressure of 50 bar, so the putty is suitable for repairing plumbing systems.

In our opinion, the product is the best for joining metal, which will subsequently be operated at low temperatures. The manufacturer in the specifications allows the use of the product on metal exposed to -50º C. This is the best option for emergency repairs of equipment in winter or as sealing containers, as well as fastening reinforcement (so as not to knit in the classic way).

Poxipol 00268 0.07 л

Rating: 4.4

This glue for joining metal is popularly called “cold welding”. The two-component composition is produced in two tubes of red and blue, and is also equipped with a tray and a spatula for mixing. The material is non-flammable, non-conductive and resistant to solvents, oils and gasoline. The reviews show that the connected metal parts, such as flat steel washers, cannot be separated from each other when the substance hardens.

Our experts noticed that the adhesive does not flow on vertical surfaces. This is due to its viscous consistency and dense mass. This characteristic allows the putty to be used for the restoration and strengthening of vertically connected structures, where it is not possible to ensure long-term pressing of the sides. The substance itself is held in place and gradually polymerizes, gaining strength.

Super glue universal super Bison Super Glue Gel, 3 g

Rating: 4.0

The review is completed with glue from the Russian manufacturer Bison. It is the most compact product as the weight of the metal adhesive is only 3g. The super glue is poured into a metal tube and equipped with a thin plastic spout to accurately feed the product to the docking point. In addition to metal, glue is able to connect furniture, shoes, ceramics and plastic. In the reviews, users share that it freezes quickly enough and it is not difficult to carry it in your pocket to always have it at hand.

We consider this glue to be the best because of its gel-like consistency. Analogues in such mini-tubes usually have a watery composition and, if carelessly pressed, the funds will come out more than required, and it will not work to collect it back. Due to the mass of only 3 g, such an inaccurate gesture can lead to the consumption of the substance in the wrong place. With Bison glue, the gel is accurately dosed at the metal joint and the residue can be controlled to help save money.

Attention! This material is subjective, is not an advertisement and does not serve as a guide to the purchase. Before buying, you need to consult with a specialist.