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Soldering with zinc-based alloys is achieved by applying zinc alloy in either a stick or powder form.  The area being repaired needs to be preheated to approximately 600 F (315 C).  The acceptable material compositions of solders used for repair are included in the specification.

The final coating thickness for this repair shall meet the specification requirement for the material category of the steel part being repaired. The thickness shall be measured by any of the methods in A123/A123M that are non-destructive. Zinc-based solder products closely match the surrounding zinc and blend in well with the existing coating appearance.

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