Troubleshooting Super Alloy 5:  Common Problems and Fixes

We often receive calls or emails asking for assistance troubleshooting Super Alloy 5, prompting us to create a video specifically for troubleshooting this unique product.

Super Alloy 5 is an aluminum welding, brazing, and soldering repair kit containing a rod and flux combo. Each Super Alloy 5 rod is 18-inches in length, and available in 1/16” and 3/32” diameter.

If you already have the 3/32” rod, you can use a hammer to flatten the rod to the desired thickness.

Note the standard brass torch tip shown. This torch tip is not recommended for use with Super Alloy 5, because propane can provide more heat than this torch will allow. We recommend using a Bernzomatic torch, as shown in the majority of our repair videos, since adjustable torch tips offer more flame control, and push more heat (which is often needed with aluminum).

Never allow the parent aluminum to sit flush upon a metal table when torch brazing, as the table will pull the heat away from the repair area. The same recommendation applies to closing the jaws of a vise too close to the work area. An easy solution to create a buffer between the parent metal and the table/vise is to lift the aluminum off the table with a steel wire, ceramic tiles, fire bricks etc.

Gently heat the end of the rod before dipping it into the flux, to ensure the flux adheres to the rod. Repeat until the flux sticks, then apply the flux to the joint.

A common mistake is blocking the area with the rod before the aluminum had reached the proper working temperature. This error in technique prevents properly heating the repair area. Instead, broadly heat the area adjacent to the hole or crack. Using this technique prevents the surrounding aluminum from sucking the heat away.

Proper Steps for Using Super Alloy 5

  1. Preheat the parent metal
  2. Gently heat rod, dip into flux
  3. Apply flux to joint
  4. Keep torch moving to slowly bring the parent metal to proper working temperature
  5. Watch for flux to become clear and watery
  6. Apply rod to joint
  7. Allow repair to air cool
  8. Remove excess flux with warm water and a stainless steel brush

When brazing aluminum, always keep the heat moving to prevent overheating and melting the metal. In this video, we turned the torch down a bit so the process would be easier to follow.

As you can see, there were some contaminates around the puncture, so we added a little more flux, dabbed the rod to test the temperature, and heated the rod slightly to soften it as we applied it to the aluminum. The next hole will close much faster since the aluminum is already warmed. Notice the flux is more active than before, cleaning the oil, dirt, and grease away while sealing the hole shut. Quickly pull the torch away once you see the rod flow out flat.

Be sure to preheat a little longer when joining two pieces of aluminum together, to ensure the parent metal is at the proper working temperature. The powder flux will preclean the metal and act as a temperature guide, transforming to indicate when the metal is hot enough to flow the Super Alloy 5 rod.

We heated the front, back, and side to side on both plates to bring the aluminum to the correct temperature. The plates pictured are only a couple of inches in length and thin. If we were working on a larger project, we would preheat longer and possibly need a hotter torch setup like oxyacetylene.

When working on thin to thick aluminum, add more heat to the heavier section to evenly bring both pieces of metal up to temperature at relatively the same rate (to avoid melting the thinner piece).

If we were to add the rod before the plate was ready, the rod would ball up due to improper base metal temperature. If this happens, discard the balled-up material and continue heating the parent metal.

Disclaimers:

Please visit https://www.aws.org/Standards-and-Publications/Free-Resources/#YourResources prior to using our welding products, and adhere to all AWS welding safety guidelines.

Further product safety information is available at https://muggyweld.com/safety-guidelines

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MSDS sheets available with purchase from MuggyWeld.com, upon request.

 

Updated 11/17/2025

 

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