What is the best filler alloy for 5083 base alloy?
Keganhirl > 07-10-2019, 09:17 AM
[ltr]Base alloy 5083 can be successfully welded with filler alloys 5356, 5183, or 5556, any of these three filler alloys may be suitable for welding this base alloy. The reason to choose one of these filler alloys over the others is dependant on the application and service requirements of the component being welded. Used in a number of applications, base alloy 5083 aids in shipbuilding, cryogenic tanks, military vehicles, structural fabrications, just to name a few. The 5356 filler is normally only used on 5083 base alloy when there is no requirement for groove weld welding procedure qualifications, in accordance with the structural welding code; this is because the 5083 base - 5356 filler combination will typically not obtain the minimum tensile strength requirements of the code (40ksi – 275MPa) for groove weld transverse tensile strength. The 5356 filler alloy is often used on the slightly lower strength 5086 base alloy and will typically obtain its required minimum transverse tensile strength for grove welds (35ksi – 240MPa). The 5183 and the 5556 filler alloys will both typically meet the code tensile strength requirements for groove welds in 5083 base alloy. Developed specifically for welding the 5083 base alloy, the 5183 filler meets the mechanical property requirements for groove weld procedure qualification. The 5556 base alloy, with slightly higher mechanical properties than the 5183, will meet the minimum requirements for the 5083 base alloy. The 5556 filler alloy was developed for obtaining slightly higher tensile strength requirements (42ksi – 285MPa) of groove welds in 5456 base alloy.[/ltr]
[ltr]In my opinion, the filler alloy selection is not the problem causing you to fail the guided bend tests; however, I do think you need to understand the application/welding standard requirements when selecting the most appropriate filler alloy.[/ltr]