UAB Aluma-Braze™, All In-One Flux Cored Aluminum Brazing Alloy

My evaporator coil on my 3-ton air handler unit had a pin hole leak. The leak was on one of the 6 distribution tubes are the expansion device. I had given another "aluminum braze rod" from Home Depot a try, but it failed to seal the leak. I decided to give Aluma braze a try and I was very impressed. I used a propane torch to gentle heat up the aluminum tube and the braze went on like glue. I was very impressed with it. Would highly recommend to anyone trying to fix aluminum coils.

I was able to soldier up screw hole in lennox commercial condenser coil. So far the best aluminum soldier I have used. Tried 3 other products with no success. Second choice is benzomatic aluminum soldier. Went thru 4 rods with no luck. Tiny leak remained. Used Mapp gas. Heat until it went liquid and sealed to screw hole. Held back 410a refrigerant in a micro channel coil.

As part of a retrofit job, I used this brazing rod to add a #10 nut to a used and very old R12 automotive AC line. I'm not sure if brazing rod was the best choice but I decided on it because I know it's a stronger bond compared to the lower temp aluminum soldering rods. Plus this rod has a flux core which seems to be very important for capillary action. I would have just tig welded it but I read that tig welding old R12 lines is problematic and results in having pin holes. Not sure if that's true but I didn't want to chance it. Some areas of the joint look a bit bumpy/porous, not sure if that's normal since this is the first time I've done this. I pressure tested it and found no leaks. I'm not able to test it at operating pressure since this is the high side line but I expect it'll be fine. I'll do an update once I get the system operating.

Self fluxing, nice flow characteristics

I used this Brazing Alloy to repair a refrigerator that had a pinhole leak where the copper piping met the aluminum coil. I had my doubts on if this would work as brazing copper to aluminum is difficult and prone to leaks which is why my fridge leaked in the first place. The refrigerator company saved .2 cents by using aluminum tubing and told me my fridge was junk after only 3 years and not reparable. Instead of throwing it into the land fill i gave this brazing wire a try and what do you know it fixed the leak. It wasn't very difficult to use just a little pricey. However it saved a refrigerator from the landfill so i would say it was worth every penny.

Es muy buena..pero hay que tener mucha practica en esto .no es tan fácil como se miran en los vídeos..calientas de mas y derrites el aluminio..me lleve poco mas de medio rollo intentando encontrar bien el punto para soldar ..pero que sirve sirve y muy bien...la utilicé en un evaporador de nevera y. Luego presurize con 400 psi de nitrogeno ..no se quebro ni fisura ni nada como otras varillas que si le pones poco mas de 100 PSI la soldadura se revienta... muy buena varilla ..vere si adquiero otra pronto

This stuff works amazing. I can't believe how easily the flow started. The bond was strong as anything, no leaks. Copper to aluminum. Just spend your time cleaning the joint, especially the surfaces to mate. This is a low-temp brazing solder, too. So you can literally use a butane torch or a 60-watt soldering iron to get this to flow. I'm not saying that will get your joint hot enough, but this is a low-temp solder. Flows easy. Durable joints the very first time. Couldn't have asked for more.

Worked fantastic. It took quite a bit more heat than expected ,but once it was hot enough the brakes sweet in like I was brazing copper

Good value for the price I didn’t end up using it and returned it