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4043 aluminium MIG welding wire is a high-quality filler metal that is used to weld a wide range of aluminium alloys, including those with a high magnesium content. It is a general-purpose alloy that is known for its excellent flow characteristics and penetration. 4043 wire produces bright, almost smut-free welds and is not sensitive to weld cracking. It is also suitable for welding castings.

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