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Wrought 4xxx alloys (extrusions and forgings) exhibit high surface hardness, wear resistance, and a low coefficient of thermal expansion. This article provides a summary of brazing filler metals used to join brazeable aluminum-base metals. It contains tables that list the nominal composition and filler-metal alloys of 4xxx series used in structural forms.

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4xxx Aluminum Alloy Datasheets, Properties and Selection of Aluminum Alloys, Vol 2B, ASM Handbook, Edited By Kevin Anderson, John Weritz, J. Gilbert Kaufman, ASM International, 2019, p 342,

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