Activ8 is an acid cored solder wire for metal fabrications.  Activ8  will solder brass, bronze, cadmium plating, copper, galvanised wire, iron, lead, mild steel, nickel and nickel plating, resistance wires (most types although flux residues should be removed), silver, spring steel, most stainless steels (using 96S), tinplate and zinc and zinc platting.

 Activ 8 can be used for a variety of uses but should not be used on electronic assemblies.

Residues of Activ 8 would, under dry conditions, be non corrosive. But as the work is usually exposed to humidity the residue after soldering would, over a period of time, absorb moisture, becoming mildly corrosive. The residue of Activ 8 is simply removed with water (preferably warm), but where flame heating is employed the flux will be extensively volatilised by the soldering operation. In addition, it will not contaminate plating baths.

This flux residue, if not removed, is considerably less corrosive than most separate fluid or paste fluxes. if Activ 8 is being used in place of stick solder and a fluid flux and the flux residue was not previously removed, there should be no need to do so when using Activ 8 cored solder wire.