To receive the most up-to-date product availability, pricing and delivery options, enter your zip code or log in to your account
Zip Code should not be blankEmail and Password should not be blank
Enter Delivery Zip Code
or
Log In
TELL US MORE
Are you currently located in California?
8 characters minimum
One number
One lowercase letter
One uppercase letter
One special character (!@#$%&*)
Password cannot contain space
Pursuant to CA SB 478, if you are located in California, Airgas cannot display your product pricing until all items have been added to your shopping cart so that we can calculate all applicable fees, including, but not limited to, shipping and handling fees.
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.