How To Solder Stainless Steel. Wipe the stainless steel down with a solvent to remove oil and grease. I know it can be done. Electrical connections to stainless steel should be made by drilling a hole and using nuts and bolts with terminal lugs, or plate the stainless first with copper or nickel.
For this you will need silver bearing solder.
Temperatures are typically below 450 c for soldering stainless steel. You can even use solder to join copper or brass to stainless steel, you just brazing is like soldering but it is done at higher temperatures and is applicable to more metals. Zinc has a relatively low melting point and therefore is not ideal but still can be soldered. The joint strength is generally lower than either brazed or welded joints. Many of these solders are toxic and their compounds provide a weaker solder joint. This makes it resistant to corrosion. I was recently playing with the harris stay clean flux, plumbing solder and a propane torch and i was soldering all kinds of stuff in the basement, so i need to give it. I have used this trick in silver soldering (or silver brazing) stainless steel and bronze belt but also want to share with you a tip how to neatly silver solder.