SSimder Silicon Aluminum Welding Wire ER4043 .035"

5% Silicon Aluminum (AlSi5) Filler Metal Welding Wire for MIG Welding Process. Contains 5% Silicon, which Improves the Fluidity of the Weld Pool and Results a brighter Weld Deposit. Less Sensitive to Weld Cracking than other Aluminum Alloys. ER4043 is commonly used for welding grades 6061, 6063, 5052, 3004, 3003 and cast alloys 356.0, 357.0, 413.0, and 443.0. 035" 4.4lbs Spool, Applicable for SSimder Welder MIG250D/SD-4050Pro.