We have many different flux options from which you can choose. If you have any questions about which flux is best used for soldering your steel or copper project, please contact our technical support team. This can help prevent corrosion of the steel surface. Tinning a soldering iron means putting a small amount of solder on the hot iron tip (also known as an iron bit) of the soldering iron. You can just wipe down the surface with a damp cloth or flush it with clean water. It can turn the copper green if not flushed off.Ĭlean the Flux And The Surface After SolderingĪs important as it is to choose the right flux, it is equally important to clean any remaining flux residue after soldering. It is important to remove any extra flux after soldering so that it doesn’t corrode the finish or the ornamental copper soldering. You will get the best flow out of these flux types when soldering. Like galvanized steel, the best flux for soldering ornamental copper is a zinc-chloride-based flux or a zinc-ammonium chloride liquid flux. Best Flux For Ornamental Copper Soldering Make sure to brush the flux wherever the solder makes contact. A zinc chloride-based flux will get you the best flow onto the base metal.Ī liquid flux that has an active chloride formation like Johnson’s Galvanized Steel Flux is a great choice for galvanized steel. Best Flux For Soldering Galvanized Steel Sheet Metalįor soldering galvanized steel, the right flux will get the best hold on your galvanized steel surface. These oxides can stop the soldering from sticking to the steel surface.Ģ. A high activity flux can help make the soldering smoother because stainless steel has tenacious oxides on its surface. No-clean fluxes and rosin flux won’t work well for soldering stainless steel. The best flux for stainless steel is a high-activity flux that has a phosphoric acid base. Best Flux For Stainless Steel Solderingįor soldering stainless steel, the best choice of flux is an aggressive flux. Recommended Flux for Sheet Metal Soldering:ġ. The best flux for soldering most sheet metal variations should be a strong and active flux with effective ingredients that are necessary for soldering.īelow are some recommendations for the optimal flux for different types of sheet metal: The flux removes the oxides from the metal to prep the surfaces for bonding with the solder.įurther, by having the correct flux, it can make the connection much smoother, and you will get a much better performance out of soldering. Flux is made of an activator and a carrier that allows the solder to “wet” to the base metal surfaces. When you are soldering any type of sheet metal, it is very important to choose the right flux.
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