From time to time, you may need to join or repair metal pieces without welding or soldering. Luckily, there are metal-to-metal adhesives/glues to ease the job. For example, epoxy glues that form the strongest metal to metal bonds; polyurethane glues that make bonds with a long list of substrates including metals; super glues that form instant and strong bonds between metal surfaces.
However, considering the numerous brands and options available, how do you find the best glue for metal? Let us be your guide here. Regardless of what you’re looking for, we’ll help you find the best glue for metal. We’ve gathered up 10 of the best metal adhesives, from the multi-metal epoxy formula like the Permatex 84209 to best waterproof glue for metal like Elmer’s E7502.
1. Permatex 84209 PermaPoxy 4 Minute Multi-Metal Epoxy
The outright winner is Permatex 84209 PermaProxy 4 Minute Multi-metal epoxy. This multi-metal two-part epoxy provides an incredible tensile strength of 4500 PSI once fully cured. Compared to other glues for metal, this formula is useful in repairing or bonding different metals such as Aluminum, Brass, Copper, Chrome, Stainless Steel, Iron, and Steel to name a few. The best part – it rules out the need for welding and brazing the metal.
This 56-gram metal epoxy comes in a twin-tube plunger which ensures equal parts of the epoxy formula are dispensed out. This combo consisting of 1 epoxy resin bottle and 1 hardener is widely used in complex projects that involve multi-piece assemblies.
For instance, sealing welded seams, filling metal cracks, and mounting heavy metal components. This fast-acting adhesive tends to set in four minutes, allowing you to accomplish the repairing project in no time. The full cure time is 24 hours. And yes, it can handle temperatures from -60°F to 300°F when fully cured.
Additionally, the Permatex 84209 is both water- and solvent- resistant. Plus, it doesn’t pose the risk of shrinking when filled and has high-impact resistance. This means ‘no cracking when drilled’. Post-curing it can be filed, sanded or threaded. To sum it up, it is the best adhesive for bonding metal to metal you can blindly rely on.
Color: Dark Grey
- When mixing the resin with the hardener the epoxy material will heat up and melt some containers. So, take the necessary precautions.
- Keep it away from direct sunlight and water. The color may change to yellow upon sun exposure.
- Less working and fixture time
- Ease to use
- No clamping needed
- Useful for multi-metal projects
- Excellent for gap filling
- Many wouldn’t like its smell
2. J-B Weld 8280 Professional Size Steel Reinforced Epoxy
The runner up is J-B Weld 8280 Professional Size Steel Reinforced Epoxy, the best glue for metal to metal adhesion. It is a steel reinforced epoxy system that works not only on high tensile metals but on a variety of other substrates, including automotive, brick, and concrete.
When mixed at a ratio of 1:1, it is said to provide 3960 PSI of tensile strength, which we think is great. However, it does require a clean surface – no oil, dirt, grease, loose debris or paint.
It is a slow-curing metal to metal glue meaning you can modify, reshape, tap, file or drill it after curing. It is pliable within 30 minutes after bonding. The set time for the J-B Weld 8280 is approximately 4 to 6 hours and the full cure time is anywhere between 15 to 24 hours. The important thing to note here is that both set time and cure time depend on the temperature. Hence this isn’t a great choice for quick repairs.
Another feature that makes it ‘world’s strongest bond’ (as they claim in the package, which is true!) is its ability to withstand high temperatures up to 550 degrees Fahrenheit once fully cured. And yes, this non-toxic formula is waterproof, petroleum-, chemical-, and acid-resistant when fully cured.
Color: Cures to dark gray
Consistency: Thick, gel-like
- Excellent tensile strength and high-temperature tolerance
- Useful for many substrates
- User-friendly, safe, and non-toxic
- High curing time
- Fussy mixing
3. Loctite Liquid Professional Super Glue
Next up is the Liquid Professional Super Glue by none other than Henkel’s LOCTITE. For the uninitiated, LOCTITE is a leading brand in advanced adhesive and sealing solutions. Backed with 50+ years of expertise, it is the trusted choice of millions of users across the globe.
This professional metal adhesive provides strong and long-lasting bonding to multiple surfaces like metal, ceramic, leather, and glass. It is a great option to bond PVC, Plexiglas, polycarbonate, and polystyrene, too. In addition, it is best suited for all heavy-duty projects, too.
The biggest advantage of it is its instant bonding power meaning you must be super quick while making adjustments. The glue dries clear and sets with zero clamping. The bonus: it is resistant to elements and most chemicals.
Besides engineers, metalsmiths, and DIYers, this super glue is a preferred choice of Jewelers, photographers, toy makers, and many others to repair jewelry, cameras, toys, metal car parts, rubber seals, etc.
Consistency: Slightly thick gel-like
- The squeeze bottle ensures hassle-free use
- Unlike other super glues, the pin cap doesn’t clog
- Great choice for quick repairs as it dries out in no time
- You can repair almost all materials
- Gluing errors can’t be adjusted because of its fast-drying nature
4. Technicqll Polimer Clear Adhesive Glue for Metal
At number 4, we have Technicqll Ms. Polimer Clear Adhesive Glue, another strongest glue for metal. Designed to provide the strongest adhesion to both smooth and porous surfaces, it is an awesome epoxy for heavy-duty and DIY projects.
An interesting feature is that it can handle temperatures as low as -50Â°C and as high as 120Â°C. Besides metal, this adhesive also works on brass, ceramics, glass, bricks, stone, wood, and rubber. That means, it is a universal adhesive for the projects involving multiple materials.
With this adhesive, the initial cure occurs within 2 hours with a full cure achieved in about 48 hours. It neither damages nor corrode the gentle surfaces. In fact, on a full cure, it remains flexible and neutral.
First off, the metal surface that needs to be bonded should be dry, clean, and degreased. For better bonding, the surfaces being bonded should be joined right after the glue is applied onto the surface. In general, they can be correlated with each other in just 5 minutes. An alternate way of bonding is applying the glue to both surfaces to bonded and joining then after the glue dries partially, for instance, after 10 minutes.
Color: Crystalline transparent
Odor: It is an odorless adhesive
- Super strong
- Holds almost all materials
- Quick adhesion and curing
- Oil- and acid-resistant
- Resistant to extremely high and low temperatures
- Surfaces need pre-preparation
5. Gorilla Super Glue with Brush & Nozzle Applicator
This excellent super glue from Gorilla is unique in that it is probably the only potent metal adhesive that comes with two-way dispense technology and fast setting within 10 to 45 seconds. In fact, it is reinforced with rubber to increase the resistance of the bonding.
The product comes in a plastic tube with a fine precision tip nozzle and a bristled brush. The precision nozzle ensures that you always have the right amount of product to bond metals, eliminating waste. Not to forget the quick and easy dispensing it offers.
The brush is included especially for the users who crave for better coverage with less mess. To prevent hardening, the manufacturer recommends not to leave the brush out of the glue bottle not more than 1-2 minutes when not in use.
In addition to its easy and high-performance formula, the superglue comes with an anti-clog cap with a metal pin inside that acts as an airtight seal. The result? Maximum reusability! Besides metals, it is useful for repairing a variety of materials, including plastic, metal, fabric, stone, ceramic, paper, rubber etc. Though working with this metal glue is a breeze, care should be taken to protect it from the air. Also, you should avoid skin contact.
Color: No specific color, transparent
Consistency: Thick formula
- Long-lasting repair with less setting time
- Finest metal to metal glue
- It has impact-touch technology for better resistance and strength
- No clamping requirement
- Contains unique rubber particles
- Skin contact may cause irritations
6. E-6000 Adhesive Metal
E-6000 Adhesive Metal by Eclectic is said to be the most reliable industrial strength glue for metal. It is available in single 59.1ml squeeze tubes and it doesn’t require mixing and measuring to get the ultra-strength bonding.
Compared to other adhesives, this one tends to set within 5 minutes. So, crafters need to be quick in making the required adjustments. In addition, it is useful in bonding wood, plastic, concrete, glass, ceramic, fiberglass, stone, and a wide variety of materials.
As far as curing time is concerned, you wouldn’t be happy if you need results in a short time. Because it takes 24 to 72 hours for complete curing. However, if you can wait for a few more days, then this might be a perfect choice.
image credit: rianve
Another reason why this metal to metal glue might be perfect is that it can withstand higher temperatures and other extreme conditions. It is also water-resistant.
Another biggest advantage of a tube of E-6000 is that its excess glue can be wiped away, and once dry, it is paintable, too.
Consistency: Lightweight gel-like
- Element proof and paintable
- High-temperature resistance
- Extremely safe for photos
- Bonds many substrates
- Safe to use in dryers and washers
- Great for craft projects
- High curing time
7. J-B Weld 8276 KwikWeld
Sliding into number 7 is another steel reinforced epoxy system by J-B Weld. J-B Weld 8276 KwikWeld is a two-part high-strength epoxy best suited for metals and aluminum. Compared to the original cold two-part epoxy, this one sets fast – within 6 minutes. The curing time of J-B Weld 8276 is 4 to 6 hours; if you want an ultra-strong bonding, do not disturb it before it completely cures.
As per the manufacturer, 1:1 mix ratio is ideal for establishing strong metal to metal bonds. Speaking of the bonding, it is permanent with a tensile strength of 2424 PSI. Once cured, it can be filed, sanded, machined, drilled or tapped. This epoxy can also withstand temperatures up to 230 degrees Fahrenheit when fully cured.
image credit: napaonline
This metal adhesive is widely used by auto mechanics, mariners, plumbers and crafters. It can also be used for common household repairs involving other surface types like wood, plastic, glass etc.
Color: Cures to dark gray
Consistency: Thick, gel-like
- Fast setting
- Strong, lasting repairs
- Less bonding time
- A wide range of applications
- Easy to use
- Good temperature tolerance
- Curing demands no external disturbance
8. Loctite Ultra Gel Control Super Glue
As you probably already know LOCTITE delivers what they claim. And, Loctite Ultra Gel Control Super Glue is no exception. We agree to look at the simple plastic squeeze tube, it doesn’t look different than any other metal adhesive on this list… until you take a closer look at the features and specifications.
First and foremost, it is a rubber toughened formula that provides a strong, long-lasting, and water-resistant bond. It is made especially for vertical applications, filling gaps between metal surfaces, and to repair porous surfaces. Just like many other metal types of glue on this list, this is also a multi-purpose glue – can be used on surfaces including leather, cork, wood, ceramic, fabric, paper, rubber, hard plastics etc.
Another important feature is the patented control applicator which aids in easy dispensing and precision. The self-piercing, screw-on cap ensures the nozzle is clog-free and the metal glue fresh. Seal it tightly and store it in an upright position for long-term use.
It is outdoor safe and can withstand freezing temperatures, moisture, shock, vibrations, and impact – it is indeed a tough formula.
Long story short: If you want to repair the objects that are subjected to harsh conditions, consider Loctite Ultra Gel Control Super Glue.
Consistency: thick, no-drip
- Dries clear and sets without clamping
- Patented side-squeeze design
- Easy application
- No running, No Dripping
- Best glue for metal
- No time to correct the adjustments when gluing
9. Elmer’s E7502 4-Ounce Advanced ProBond Advanced Professional Multi-Surface Bond
For the record, Elmer’s does more than those white paste and glue sticks many of us have used in art classes. One of the best waterproof glue for metal is, in fact, produced by the Elmer’s. The E7502 Advanced ProBond is a multi-surface professional-strength glue that works well with metal, glass, ceramics, wood, stone, and more. It forms bonding that is long-lasting, strong, and of course, water resistant.
The best part is that unlike the majority of the metal adhesives in the market, it doesn’t produce foam. It dries quick and clear and doesn’t require a wet or pre-prepared surface for adhesion.
Another plus is that it shows no shrinkage or cracks after curing. You can even sand it or clean up with water. And if you want to paint over, you can go all out and use any colors. It comes in an easy to use a plastic bottle of three sizes – 2, 4, & 8 ounces. And yes, it is 100% weatherproof and nontoxic as well.
Color: Clear, transparent
Consistency: Runny, like watered down glue
- It is fast-drying
- It becomes translucent after drying
- Offers multi-surface repairing and bonding
- It is paintable
- No frothy foam formation and messy application
- Due to watery consistency, it flows quick
10. Henkel 1405605 Steel Heavy Duty Epoxy
Besides metals, this excellent heavy-duty product from Loctite works on concrete as well. This is a two-part system and comes in a convenient twin tube plunger (one for epoxy resin and another for the hardener). This ensures the mix is taken in the right proportion and used properly.
This way it eliminates waste. It is very effective for joining, attaching, and even sealing the metal to metal or metal to other surfaces. The bond is pretty strong and holds up well against vibrational forces and high impact.
Working time for this metal adhesive is around 5 to 12 minutes. It gets completely cures in a few hours. The tensile strength of Henkel 1405605 is 3200 PSI. Once cured, it is completely resistant to water and solvents. If you need to glue together materials like ceramic, glass, and wood, this will work.
Because of its flexibility in applications, it is widely used in repairing machinery, lawnmowers, automotive parts, pipes, bots, appliances and more.
- High impact resistance
- No shrinking
- Don’t conduct electricity
- The squeeze tube isn’t that great
- Messy application
Best glue for Metal – Buyer’s Guide
Choosing a metal adhesive for depends on what you wish to repair or fasten and how much durability you require. It’s quite possible that you may always end up picking a simple glue you’ve come across in an online or offline store. That said, there’s no real wrong choice when it comes to metal glues but there’s the chance to get the most for your dollar.
Here are some considerations to choose the right glue for your assembly process.
- Bond Time
First, evaluate workflow and the time requirement. Metal epoxy adhesives and super glues have unique working, fixture, and cure times. If a metal glue takes 48 hours to cure and you need the assembled metal within 24 hours, you must find a glue that cures faster. However, ensure the shorter cure time isn’t interfering with the quality of the bond.
- Mechanical challenges
Will the bonded metal part be subject to vibrational forces? What are the stress levels on the bonding? What are the different types of mechanical stresses? Find answers to these three important questions to determine which type of adhesive you may require.
- Element Resistance
What environment the fastened metal piece would probably be exposed to? Do you want the cured metal to withstand temperature extremities? How about the rainy days? Will dust and dirt hinder the performance of the metal piece? The answers will help you to zero in on the right metal glue.
- Chemical resistance
Just like the elements, acid can pose a threat to the durability and longevity of the metal. You shouldn’t neglect the effect oil and gasoline will have when they come in contact with the joint. Check if the bond is resistant to harsh conditions and choose accordingly. Few other questions to ask: Will any potent chemical come in contact? And will it be temporary or permanent?
- Amount of glue required
Next, you should look at the amount of assembly required. This will give an idea about the number of glue tubes or bottles required and the cost.
- User friendliness
Considering the fussy mixing, toxic nature, running consistency, and easily drying out nature, some metal glues aren’t user-friendly. On the other hand, there are epoxy adhesives/ glues that are not only easy to work with but non-toxic.
Metal to metal adhesives – Usage tips
DIYers can easily choose between an epoxy and a JB Weld glue to proceed with their project. But Gluing metal to metal isn’t as easy as gluing DIY jewelry or any other small project. Because they have quite dense, smooth surface and requires some prerequisites. Read on to find out some handy tips for using metal glues.
Dirt, oil, wax, grease, or other residues on the metal surfaces may seriously affect the bonding quality. Hence, you should thoroughly clean the surfaces to be bonded. Also, ensure that there is no paint, rust or corrosion on the metal surfaces. Another way to increase the metal to metal bonding is to roughen the metal surfaces using fine-grit sandpaper.
Not all metal glues are made equal. Different types of metal glues come with different set of instructions for mixing, application, curing, filing, sanding etc. Some high-end adhesives might even need to follow certain mixing ratios. Therefore, it’s important to strictly follow the manufacturer’s direction.
Another important thing is to look for safety warnings mentioned on the label. Most metal glues or adhesives instruct the users to work in outdoors or a ventilated area. Also, ensure you don’t make intentional skin contact or breathe the glue fumes.
Most super glues and epoxy formulas come with high tensile strength, precision technology, and better curing. Know what you’re looking for and understand the art and science involved in using them. And yes, be sure the metal glue you buy tick all the boxes so the metal pieces are perfectly bonded.