Best Epoxy Adhesives for Metal in 2025: Full Comparison & Buying Guide
With so many options on the market, how do you choose the best epoxy for metal? In this guide, we review and compare the top epoxy glues for metal in 2025, so you can find the one that suits your project best.
ADHESIVES
If you're looking to bond metal surfaces with strength and confidence, using the right epoxy adhesive for metal is essential. Whether you're fixing machinery, repairing tools, or crafting metal artwork, a high-quality epoxy ensures a long-lasting and durable bond.
But with so many options on the market, how do you choose the best epoxy for metal? In this guide, we review and compare the top epoxy glues for metal in 2025, so you can find the one that suits your project best.
What Makes a Good Epoxy for Metal?
Before we jump into the comparisons, let’s quickly go over what you should look for:
High tensile strength for load-bearing applications
Temperature resistance for industrial or automotive repairs
Corrosion and chemical resistance
Fast or slow curing depending on the job
Compatibility with other surfaces (e.g., plastic, ceramic, glass)
Our Top Picks: Best Metal Epoxies in the Market
J-B Weld Original Cold-Weld Epoxy
Best for: Heavy-duty metal-to-metal repairs
Tensile Strength: Up to 3960 PSI
Set Time: 4–6 hours / Full Cure: 15–24 hours
Temperature Resistance: Up to 550°F (287°C)
Waterproof & chemical resistant
Suitable for: Steel, iron, aluminum, and more
Why we recommend it:
J-B Weld is one of the most trusted brands in the U.S. and Canada. This epoxy is a go-to choice for mechanics, metalworkers, and DIYers. It creates a bond stronger than steel and can withstand high heat and pressure.
Loctite Epoxy Weld Bonding Compound
Best for: Automotive and structural metal bonding
Strength: Up to 3200 PSI
Set Time: 5 minutes / Cure Time: 1 hour
Heat & impact-resistant
Easy-to-use syringe format
Works on: Stainless steel, aluminum, galvanized steel
Why we recommend it:
Loctite’s epoxy weld formula mimics the strength of traditional welding—without the tools or heat. Perfect for those who need a strong bond in a short time frame.
Permatex 84209 PermaPoxy 4-Minute Multi-Metal Epoxy
Best for: Fast repairs and general-purpose metal bonding
Strength: 4500 PSI
Set Time: 4 minutes
Permanent bond for steel, aluminum, copper, brass
No shrinkage / grey finish
Why we recommend it:
This is a fast-curing formula with incredible strength, making it ideal for emergency fixes or on-the-go repairs. It’s also very affordable and available in most hardware stores across the U.S. and Canada.
Gorilla Epoxy
Best for: All-purpose bonding on metal and other materials
Strength: 3300 PSI
Set Time: 5 minutes
Water and solvent-resistant
Crystal-clear finish
Why we recommend it:
Gorilla Epoxy isn’t the strongest, but it's extremely versatile and user-friendly. Great for beginners or general DIY work where aesthetics matter (e.g., fixing visible cracks on tools or decor).
Devcon 2-Ton Epoxy
Best for: Industrial-grade strength bonding
Strength: 2500–3000 PSI
Set Time: 30 minutes
Works on metal, wood, glass, ceramics
Waterproof and chemical-resistant
Excellent shelf life
Why we recommend it:
Devcon offers a good balance between work time and bond strength. It’s commonly used in light industrial and fabrication settings where reliability is key.
Epoxy Buying Tips for Metal Projects
Check the temperature resistance – Outdoor or automotive use? Choose an epoxy that can withstand heat and cold.
Decide between fast-set or slow-set – Fast epoxies are convenient but may cure too quickly for large or precise jobs.
Know your materials – Some epoxies work best when bonding metal to metal, others are better for mixed materials (metal to plastic, metal to wood, etc.).
Consider aesthetics – If the epoxy will be visible, opt for a clear or color-matching option like Gorilla Epoxy.
Best Epoxy for Metal in Different Use Cases
Best for Heavy-Duty Repairs → J-B Weld Original
Best Fast-Cure Option → Permatex 4-Minute Epoxy
Best for Beginners → Gorilla Epoxy
Best for High Heat Projects → Loctite Epoxy Weld
Best Budget Industrial Epoxy → Devcon 2-Ton
Where to Buy the Best Metal Epoxies
All of these epoxy adhesives are available online in the U.S. and Canada from:
Amazon
Home Depot
Lowe’s
Canadian Tire
Walmart
Final Thoughts: Which Metal Epoxy Should You Choose?
Choosing the right epoxy glue for metal depends on your project type. If you need industrial strength and high heat resistance, go with J-B Weld or Loctite Epoxy Weld. If speed is a priority, Permatex is a fantastic option.
For everyday tasks, Gorilla Epoxy is the most user-friendly and still delivers great performance. Professionals who need precise working time and consistent results may prefer Devcon.
Whatever you choose, remember: proper surface prep is just as important as the adhesive itself. Clean the surface thoroughly, roughen it slightly, and clamp where possible for the best results.