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The 1/16" X 36" #4043 ALUMINUM (16-803) is an aluminum welding electrode by Washington Alloy. The E4043 (also known as AlSi5) is a 5% silicon aluminum filler metal used in MIG or TIG welding processes. This alloy is convenient for welding alloys 3003, 3004, 5052, 6061, 6063, with casting alloys in 43, 355, 356, and 214. The melting temperature of Washing Alloy 4043 is 1065° - 1170°F, and the density is 0.097 lb/cu-in
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