Flux for soldering steel

[garethashenden]

I need to solder mild steel wire to phosphor bronze wire. Any recommendations on a liquid flux.? Thanks!

[peteski]

Standard flux based on zinc chloride (like TIX Liquid Flux) should work well. That is what I use for this type of solder joints. Just make sure the metal surface is very clean.  Zinc chloride is acidic so make sure to clean the area really well after soldering.  I think baking soda dissolved in water will neutralize the acid.

[garethashenden]

Standard flux based on zinc chloride (like TIX Liquid Flux) should work well. That is what I use for this type of solder joints. Just make sure the metal surface is very clean.  Zinc chloride is acidic so make sure to clean the area really well after soldering.  I think baking soda dissolved in water will neutralize the acid.

Thanks Pete, I thought you'd know.