Best Glue for Metal
About Metal Bonding Adhesives
From time to time, you may need to fasten two or more pieces of metal together without bolting, soldering, or welding them. Fortunately, there are special adhesive products on the market made for gluing metal.
Epoxy & MMA for Metal
Epoxy and MMA form some of the strongest metal-to-metal bonds. These two-part high-performance adhesives are often used in carpentry and woodworking or for specialized creative uses. Epoxies and MMA's offer different types with different properties: flexible or rigid, transparent or opaque, fast or slow setting. They also offer high resistance to heat and chemicals.
Super Glue for Metal
Cyanoacrylate super glues are high-performance industrial adhesives that are perfect for almost all household fixes. Most bond well with metals, as well as fabrics, wood, and plastics, making them useful in joining or repairing car parts, ornaments, small appliances, and many other daily items.
Polyurethane PUR for Metal
Polyurethanes are also commonly used with metal. Polyurethanes are water-resistant and UV-resistant and set quickly without being brittle. Once cured, they can be sanded, stained, and painted. Polyurethane PURs are moisture-curing adhesives and create stronger bonds than ordinary construction adhesives. Polyurethane works on metal across a wide range of temperatures, making it the best metal glue for outdoor use.
Hot Melt for Metal
Hot melt can be a good choice when bonding metal to another substrate, such as wood. Hot melt typically wouldn't be a first recommendation, as it is not as strong as structural adhesives. Don't use hot melt glue sticks when the glue will be exposed to elevated temperatures after curing, hot glue is manufactured to react with heat.
View Frequently Asked Questions
Best Overall: MMA 300 High Performance Methacrylate Adhesive - 5 Minute Open Time
The Infinity Bond MMA 300 offers strong bonds to a wide range of substrates but does especially well with metals, plastics, and fiberglass. Like most methacrylates, MMA 300 offers great impact resistance and holds up under tough environmental conditions. The MMA 300 also has a tremendous ability to hold a bond under extreme hot and cold changes (aka thermo cycling) making it perfect for many product assembly and manufacturing operations.View Details
Best Super Glue for Metal: Infinity Bond Methyl Super Glue Cyanoacrylate
Use the Infinity Bond Methyl Cyanoacrylate Super Glue for metal bonding in product assembly applications or where more rigid bonds are required. While most cyanoacrylates are ethyl based formulas, the Infinity Bond Methyl Super Glue is more rigid, making it superior for metal bonding applications.View Details
Best PUR Hot Melt for Metal: Infinity PUR MP75 General Purpose Polyurethane Adhesive
The Infinity PUR MP75 is a high performance polyurethane hot melt that bonds to a wide range of substrates. It offers a longer open time - around 75 seconds - giving users ample time to set their substrates or bond larger surfaces before the adhesive sets. MP75 can be used to bond wood, metal, plastics, cement, ceramic and more.View Details
Best Hot Melt for Metal: Infinity SuperTAC 88 Plastic and Metal Bonding Glue Sticks
Infinity SuperTAC 88 is a strong, versatile glue stick and is particularly good at bonding non-porous substrates. This means surfaces like plastic, metal, ceramic and more. Because SuperTAC 88 does well with typically difficult to bond surfaces, it lends itself well to a wide range of applications like product assembly, POP display manufacturing, furniture assembly and more.View Details
Best Glue for Bonding Metal
Choosing the best glue for metal is essentail to a strong fit. The best metal glues generally fall into three types; epoxy, polyurethane, and super glue.
Epoxy adhesives are high-performance adhesives often used in carpentry and woodworking or for specialized creative uses like making costume jewelry. These practices include not only wood, but also metal in some instances such as handrails, table legs or doorhandles. Epoxies come in different types with different properties: flexible or rigid, transparent or opaque, fast or slow setting. They also offer high resistance to heat and chemicals.
Polyurethanes are also commonly used with metal. polyruethanes are water-resistant and UV-resistant and set quickly qithout being brittle. Once cured, they can be sanded, stained, and painted. That makes them great for many jobs around the house, including repairing flooring or finished carpentry like cabinets or tables.
Super glues are high-performance industrial adhesives that are perfect for almost all household fixes. Most bond well with metal, as well as fabrics, wood, and plastics, making them useful in joining or repairing car parts, ornaments, small appliances, and many other daily items.
Metal surfaces tend to stick better if you give each surface a light sand with fine grit sandpaper before you attempt to bond it. The abrasion helps the adhesive stick to the surface. Wipe each surface with methyl ethyl ketone (MEK) or acetone. Use a clean cloth that won't leave fibers behind. Do the wipe-down whether you've chosen to sand the surface or not. Use a heavier degreaser if there is any oil or grease on the surface. Once you've removed the oil, give the surface a quick qipe with acetone or MEK to make sure that the degreaser is off. Allow each surface ato dry completely before you apply adhesive.
Test your adhesive on a small surface area. If you see that the adhesive forms beads on the surface, then it isn't suitable for bonding that particular type of metal. Try it again after a light abrasion. You should be able to spread the adhesive evenly across the surface. When it distributes evenly without forming beads, then you probably have the right glue for the job.
When you bond metals, you must get the two metal surfaces to bond with each other for a secure, long-lasting bond. If the surface is rusted or painted, and you don't remove the layer, then you're bonding rust to rust or paint to paint. When you subject the bonded metal to any pressure, the paint or rust will stick securely to the adhesive but will pull away from the metal surface, causing the bond to break. The same thing will happen with mold, dust, oil, or any other contaminant. Make sure you remove any surface materials or dirt from the surfaces before you attempt the bond. This helps ensure the tightest and strongest structural bond possible.
Get a Personalized Recommendation
Finding the right product for your adhesive application can be difficult. That's where our team can help. We've tested hundreds (probably thousands) of adhesive products and use our experience to advise companies of all types and sizes.
Tell us a bit about your application and we'll get a recommendation over to you in no time.