In other words, the solder will still adhere to the surface just as well if there’s no water present. It can help reduce oxidation during heating on some metal surfaces (nickel and stainless steel), but it doesn’t have any cleaning or wetting properties. Water can be used as a substitute for flux in certain situations, but it has its limitations. You may find it interesting – What can I use if I don’t have soldering wire. You may end up with some bad-looking joints (not good for mechanical strength), and your solder wire could corrode faster since there isn’t any additional protection provided by the flux. When the parts are hot enough that the metal starts to melt, it’s more likely to form balls or lumps instead of creating an even coating. Without any type of added flux, solder won’t flow easily to the parts and will adhere poorly. ![]() Soldering is possible without using flux, but you’ll often get a poor joint. Keep reading to learn more! Can I solder without flux? But what if you run out of flux or need to do some quick repairs and don’t have any on hand? Are there any substitutes that can work just as well? In this post, we’ll take a look at some alternatives to flux and discuss how well they work. ![]() It helps the solder flow smoothly and adhere to the metal surfaces, which results in a strong, reliable joint. When it comes to soldering, flux is an essential ingredient. Home ▸ Soldering ▸ What Can Substitute For Solder Flux
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