Indalloy Flux #1 is a non-acid*, non toxic*, Pb-free, amber colored paste flux for use on copper, brass, galvanized iron, lead, zinc, tin, silver, nickel, mild steel, terne plate and malleable iron. Its strong detergent action cleans as it solders.
Due to its possible corrosive nature, Indalloy Flux #1 is not recommended for electronics applications.
Flux residue removal is mandatory and may be accomplished by means of warm water and mechanical scrubbing. Cleaning should be performed as soon as possible after the soldering operation to avoid possible corrosion. The cleaning water temperature should not exceed 50°C. Excessive water temperature may cause secondary reactions and result in corrosion and/or pitting. A warm water sonication may also be a means of flux residue removal.
Solder Alloy Compatibility
Indalloy Flux #1 works well with all common soft solders. The chloride content may cause corrosion of indium based solders.
Due to its paste like viscosity, Indalloy Flux #1 is probably best applied by swabbing. Any flux application equipment should be corrosion resistant.