SUPERFLOW® 6 (6HP) is a Phos-copper brazing alloy formulated to join copper, brass and bronze. This alloy has higher phosphorus than most phos–copper alloy giving it a “quick flow” useful in production setting as well as automated applications. Superflow brazing flux is needed when working on brazeable grades brass or bronze. Phos-Copper alloys are self-fluxing on copper but should not be used, on copper alloys containing more than 10% nickel, steels, and ferrous metals or in any sulfurous atmospheres. Aluminum bronze requires the use of Aluminum bronze brazing flux.