Will JB Weld Work On Aluminium?

• Post By: Brandon M. Fox  • Updated: 09/22/21
• JB weld

When you apply JB weld on an item, you will know how strong and significant it is on those items where you want to weld. JB weld is such a weld by which you can work on most of the items except very few items. When you can’t afford to hire a welder or work done by a welder, JB weld can handle this matter to help you.

Here you will know whether JB weld will work on aluminium or not; if it works, then how it can work. Indeed, JB weld can do a great job on aluminium if you maintain all proper instruction

To learn and know about the JB weld on aluminium and the whole process of applying, make sure to read out this article from first to last.

Related: Does Jb Weld Work On Cast Iron?

Will J-B Weld Work on Aluminum?

Yes, JB weld will work on aluminium. This two-part epoxy of JB weld allows making a strong adhesion bond between two or more metal pieces. Except lead JB weld can work on any surface of metals. The reputable company of this JB weld doing business over 50 years which makes this epoxy become more strong adhesives.

This epoxy can do a better job on more minor repairs than the more extensive repair. Because some more significant repairs contain different criteria to use JB weld, you need to follow those to get a better result, but more minor repairs are straightforward to do.

From the review of JB weld, many people explain that they use this JB weld on aluminium, and they got a powerful bond that stays for many years. They are delighted with the product because they did it in an effortless way and got an excellent result.

How Effective is J-B Weld on Aluminum?

Every person who used JB weld said if you could give the product to stay as long as the cure time and if you follow other instructions, then it will not give you any upset result. There are always a few things or matters which cant be suitable for all, no matter how intense the material is.

Because every strong material doesn’t have the same ability to hold a lot of weight, so, before doing repair, make sure you know well about it and apply properly not to repair the part more than once or again broken.

How Can You Use J-B-Weld on Aluminum?



It is so much essential to know how to use JB weld on aluminium; otherwise, you can get an unexpected result. At first, make sure to clean all pieces or parts of aluminium which is cleaning any rust, dirt, colours, or other contaminants from the surface of it. 

If there is still have any oil or grease, then use a solvent to clean off those contaminants. Where you are going to apply the epoxy, you may need to score the aluminium, and this chore of mixing can be done by a good wire brush. And for mixing, you need the 1 to 1 ratio of the two liquids.

Look at the package, and you will find some instructions and follow them step by step. If you feel any heat or chemical reaction from the mixture, then work done as soon as possible. Then apply the epoxy to the two items and clamp them together. Let it be strong until the cure time isn’t finished. For getting an excellent result, let it stay for one day.

What JB Weld is best for aluminium

Usually, the best JB Weld product for aluminium is created for use in boats because they should control callous conditions, so they should stay strong. We got two most strong JB welds, these are-

1. J-B Weld 8271 KwikWeld Professional Size

The fast-setting version of the original J-B Weld two-part epoxy cold weld system is KwikWeld. This can give you powerful and long-lasting repairs on many surfaces of materials. Fully cure time for this is 4-6 hours, and set up time is 6 min. After mixing, you will get a permanent bond.

2. Star Brite 4 Oz Epoxy Putty Stick

This is specially designed to work underwater. This is usable for emergency and permanent repairs on board. This is also very easy to use and the cure time for it is 60 minutes and can make bonds is 5-10 min. To weathered aluminium, oxidation and anodization happen to maximize bonding.

Is JB Weld strong on aluminium?

Of course, aluminium is excellent for aluminium welding, but JB weld also can do the job done very perfectly. We found by some scientific tests that 5020 psi roughly the tensile strength of JB Weld reaches. And you have to allow the epoxy to cure overnight if you want to reach that level of strength.

For the cure of JB weld, the time is between 15 to 24 hours, and the setup time is 4 to 6 hours. If you let it stay for the time of cure and set up, then you won’t have to do the repair again or won’t face any problems.

JB weld aluminium cure time

In the product you will be able to see the setup and cure time and for that thanks to the company by which everyone will able to know about it. Indeed, for JB, weld cure time is 15 to 24 hours while set up time is 4 to 6 hours. 

Before testing the repair, wait till the current time is over. You will be able to find many products with little cure time, but they are not strong as this JB weld.

Final words

Finally, you may get to know how a JB weld works on aluminium from this article. So now, if you apply this, be careful on instruction and the cure time for getting the perfect bonding for an extended period using. Because for each product there have a few different issues, and you should follow these carefully.

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Brandon M. Fox

I have completed Diploma at Welding. I have spent 10+ years in Welding. Now love to write about welding and welding products and share my own experiences. Find me: Twitter | Facebook
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