ALUMINUM BRONZE A-3 Alloy
AWS A5.7 Class ERCuAl-A3
Washington Alloy Aluminum Bronze A-3 contains a higher Iron (Fe) content than Aluminum Bronze A-2. The higher Iron content gives “A-3” greater strength when joining aluminum bronze castings of similar composition.
“A-3” is often used for piston overlay and bearing surface applications which require higher strength, while maintaining good ductility.