Hobart 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 fluidityLow 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
Click to view full spec sheet