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Item Details:4043 filler metal is a popular aluminum/silicon filler alloy for general purpose welding applications. Features/Benefits: Moderate strength (28 ksi typical). Low melting temperature/high fluidity. Low welding smut and discoloration. Low ductility, formability, and lower toughness. Moderate electrical conductivity and thermal conductivity. Excellent corrosion resistance. Low shrinkage rate/reduced distortion. Low hot cracking sensitivity in most applications. Specifications AWS A5.10 ASME/SFA 5.10 Applications Welding 6xxx alloys Automotive/motorcycle frames Sports products - scooters/bicycles General Repair and Maintenance Product Attributes: Attribute Value Diameter 3/64" Weight 1 lb AWS Classification ER4043 Trade Name Hobart® Hobart® MaxalMig® 4043 Spool Diameter 4" Package Plastic Spool