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Guidelines For Selecting The Most Appropriate Filler Metal (4043 or 5356)

Selecting the correct filler alloy for aluminum is based on the operating conditions of the finished welded component. It is therefore essential to have the answers to some basic questions prior to the selection of the most appropriate filler metal.1. What is the aluminum base metal designation?2. Will the welded component be exposed to sustained elevated temperature?3. Will the completed weldment be subjected to post weld anodizing?4. Will shear strength, ductility, and toughness be of prime consideration?5. Is post-weld heat treatment to be performed?Alloys 4043 and 5356 are used in over 85% of all aluminum weldments. If the technical requirements

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