So, the question of the day, will the solder paste solder zinc alloy?

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Zinc alloy is pretty broad range of materials and so the first answer was – we don’t know.  That’s pretty weak so we found a zinc die cast part we use and tested it.  This was a Zinc AG40A die cast, unplated material.  We tested the solder in some porous sections and between the threads.  In both cases the paste did not adhere well to the zinc die cast.  We tried again on a nickle plated zinc part and got the same results.

Solder Paste on Zinc Die Casting

Model #7459 Solder Paste Description

No waste! No mess! This disposable 7.1 gram syringe of Silver Bearing Paste is convenient while easy to apply. Our paste works with a match, lighter, soldering iron or torch. Our Silver Bearing Paste allows anyone to solder all ferrous and non-ferrous materials.  These metals include, black steel, bronze, cast iron, chrome, coated steel, copper, gold, monel, nickel, platinum, silver and steel. Our product provides the strength needed without the distortion of high temperature brazing. The paste also offers superior electrical conductivity while also being resistant to stress and vibration. As a result it can be used for soldering wires, connectors, cables, copper piping, home plumbing, car radiators and so much more!

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