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Soldering 304 grade stainless steel

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Andy Brocklehurst18/10/2020 20:27:57
12 forum posts

Hope I’ve posted this in the right place but has anyone had much experience in soldering 304 ss? If so what’s the best flux and solder to use.

Ive been told 304 is difficult to solder.


Peter Krogh18/10/2020 21:02:54
216 forum posts
20 photos

95% tin, 5% silver melts at 430 F. and was designed for 3xx food grade soldering. It's very much stronger than tin/lead solder and doesn't fatigue fail. It also works perfectly for soldering copper, brass, steel, bronze, etc.

Very easy to use, wets out very nicely, and doesn't oxidize.

The flux is an acid liquid.

Both should be available at any welding supply store.

DO NOT confuse this with the tin/zinc solders sold for copper 'lead free' joins. Tin/zinc is a horrible solder!

Edited By Peter Krogh on 18/10/2020 21:03:50

CuP Alloys 119/10/2020 09:56:07
264 forum posts

Hi Andy,

See personal message


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