Will JB Weld Work on Aluminum?

Last Updated on May 17, 2022

The JB Weld brand is famous for its vast variety of uses. The public has been using JB Weld for years, and it is one of the most recognizable brands in the market. Whether you have a small project that you are working on or a large project, JB Weld is the perfect solution, working on various materials and providing instant action.

The moment you apply JB Weld on any of your items is the moment you realize how useful it is. It offers great utility considering the number of products it works on. The product serves as a great alternative for people who don’t want to avail the services of a professional welder; this shows that the JB Weld, in many situations, can also serve as a very cheap alternative compared to a professional welder. So, if you are a person on a budget, JB Weld can be especially helpful to you and your work.

In this article, we will be answering the question regarding JB Weld’s applicability to aluminum. We will thoroughly go over everything and explain how to use JB Weld on aluminum if that is possible.

Will JB Weld Work on Aluminum?

Time to let go of your curiosity. The answer is yes; JB Weld does work on aluminum. JB Weld works great on all metal surfaces except for lead.

The way that JB Weld works on metal surfaces is that it uses a two-part epoxy. This two-part epoxy aids in forming a strong adhesion bond between two individual pieces of metal. The effectiveness of the bond is great and works reliably. JB Weld has been around for decades, and its long history is alive because of the quality of its products.

Now that we have established that JB Weld works on aluminum, let’s discuss where we recommend you use it.

JB Weld can work on aluminum with much ease; however, we recommend you use JB  Weld on minor repairs and not on heavy-duty applications. When we say this, we don’t mean to suggest that JB Weld won’t work in some heavier applications, but we would recommend using the proper tools in such a situation.

The thing with a heavy-duty repair is that when you use JB Weld for it, you can’t use it with your eyes closed. You will have to check the criteria for the heavy-duty repair and then follow it accordingly to achieve the result you want.

JB Weld has been providing its customers with a level of satisfaction that has been unmatched for years. Many customers testify positively about the abilities of JB Weld; they claim that the bond formed by JB Weld is strong enough to last for years, and they also say that the ease of using JB Weld is unparalleled.

JB Weld is the complete package, offering ease of use and reliability, which is something that we do not see from products these days.

It is said that if JB Weld is provided the appropriate cure time and, if applied with all instructions taken care of, it will most definitely provide a positive result. One thing to note is that, even though it works for many applications, you will still need to be mindful of which applications it is not suited for.

It is also recommended to be well-informed of the qualities of the materials on which you will be applying JB Weld; doing this will make sure that you are getting the best possible results from your use of JB Weld. It is said not to use JB Weld more than once on a specific part, so if you have used it on a part before and it broke again, then try to avoid it.

Keeping these things in mind will help ensure that when you are using JB Weld, you are using it to the maximum of its capabilities.

How to use JB Weld on Aluminum?

To make sure that you are using JB Weld properly on aluminum, then you must follow the appropriate steps.

Firstly, take your piece of aluminum and start cleaning it. Look for spots where there is any sort of rust, discolouration, or direct and then scrape them off as well as you can. Once you do this, then check for the cleanliness.

If you find that there are still some oily spots left on the surface, try to use a solvent and clean off those spots. Doing this will make sure that the aluminum is in prime condition for the use of JB Weld.

The second step is to score the piece of aluminum. To do this, you will have to use a wire brush. You will have to aim to achieve a ratio of 1:1 between both liquids.

The package will contain some steps which you can also use to apply the weld. Once you have prepared everything, take the pieces of aluminum which you want to join together and apply the epoxy in the appropriate area.

Once you have applied weld, give it the appropriate time to cure. We would recommend giving a curing time of one day.

Using these steps will provide you with the best results possible for your application and make sure that the bonds you will form with the weld are strong enough to last you for a long time.

What JB Weld is best for aluminum?

We have selected two options that we believe will work best with aluminum. We have kept in mind the potential uses of the products and have made our list accordingly. We have given the highest priority to the strongness of the weld. However, we have also kept in mind other qualities and features for our selection, such as waterproofing, to make sure that each person’s needs are met.

Here is our list of the two best JB Welds for aluminum.

J-B Weld 8271 KwikWeld Professional Size

The JB Weld 8271 KwikWeld is a fast-setting alternative to the Cold Weld. This weld provides a long-lasting solution and is perfect for all your DIY projects. It is quick and easy to apply and has a curing time of around four to six hours.

After the curing time is done, the weld can be tweaked, and you can adjust the bond as you deem best.

The weld is also very durable and can handle extremely high temperatures without disintegrating. The weld is also waterproof, making it good for applications where there will be water.

It is a good option for anyone who wants to be doing any sort of DIY work and still remains a decent option for some more extensive uses.

J-B Weld 8281 Professional Size

The JB Weld 8281 is a weld that has been designed as an alternative for torch welding. The durability of the bond created by the 8281 is great. The weld provides a bond that is extremely strong and can work on a variety of surfaces. It can be said that the bond created by the weld is stronger than steel.

It takes four to six hours to set, and the curing time for the weld is fifteen to twenty-four hours. Once the curing is done, you can adjust the bond accordingly. It is also a very versatile option for you. It is very heavy-duty and can handle extreme temperatures up to 550 degrees. The weld is waterproof, which also increases its versatility. On top of that, it is resistant to petroleum and other acids.

This is a good all-around option for you if you aim for high durability and high versatility.

Is JB Weld strong on aluminum?

Even though aluminum is a good option for aluminum welding, the JB Weld does the job in its place perfectly. Through testing, it has been found that the weld has a 5020-psi strength which is a very good figure. However, to ensure that you are achieving this number, you have to cure the bond overnight.

If an appropriate time for curing is provided, then one does not have to worry about the bond breaking, and one can also work on adjusting the bond with ease.


In this article, we have thoroughly discussed the application of JB Weld on steel. We have discussed how it is possible to use JB Weld on aluminum. We have also discussed in detail how to make your aluminum pieces ready for use to make sure that you achieve the best results.

There are also the best options for JB Welds mentioned in this article, along with the specialties of each weld and what it brings to the table.

Hence, when you set out to purchase for JB Weld to use for your aluminum parts, keep in mind the things we have talked about to make a well-informed decision that will last you for a long time.

Each product has its own issues and its own benefits, and you must have a clear understanding of your personal needs when using a weld.

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