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Aluminum Brazing Flux
Superior No. 20 is a general purpose, water-soluble brazing flux for aluminum applications using the BAlSi filler alloys. Superior No. 1250 is an aluminum brazing flux designed for controlled atmospheric brazing.
Superior aluminum Brazing flux powders are RoHS compliant.
Superior No. 20 Aluminum Brazing Flux is formulated for aluminum and aluminum-based alloys:
Active temperature range of 345-690°C/650-1275°F.
Promotes strong braze joints in aluminum alloys, without melting the substrate metals.
Flux wets joining surfaces thoroughly and prevents the entrapment of aluminum oxide inclusions in the joint.
Flux residues are water-soluble.
Used primarily with gas-oxygen torches, but works in select induction and furnace brazing applications for aluminum metal and most common alloys.
Flux meets AMS 3412D Specification.
Superior No. 1250 Aluminum Brazing Flux is formulated as a brazing compound for controlled atmospheric brazing. The brazing flux meets the rigid requirements of successful atmospheric brazing of aluminum, most commonly used in heat exchangers. Superior No. 1250, in its molten stage, does an excellent job of removing oxide layers from aluminum surfaces, facilitating a strong braze joint. The typical filler alloy used with No. 1250 is a fusible alloy of aluminum and silicon.