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As a basic description we can say that 4043 is an aluminum filler alloy with 5% silicon added and that 5356 is an aluminum filler alloy with 5% magnesium added. There are some misconceptions within the industry that you can successfully weld any aluminum base alloy with either 4043 or 5356 filler alloy. I must start by saying that this is not the case. However, there are many common structural aluminum base alloys that can be welded with either 4043 or 5356. One such alloy is 6061.
I am looking for some assistance with the selection of the most suitable filler alloy for a particular GMAW welded aluminum structure. Application: Structural component used for material handling manufactured from 6061-T6 in material thicknesses of 1/8 to 1/2 inch.
I have a situation were my customer is experiencing failures in their guided bend tests. The Base Metal is 5083 and the filler alloy is ER5556. The test plate is a 5mm thick single groove weld with a 70 degree included angle, no root gap and a 2mm nose. The weld is back gouged and welded from the second side. We are not sure if we are using the correct filler wire; our welding equipment supplier has suggested that we change to an ER5356 type wire. What is your professional advice on this issue?
I have been informed that there is a filler alloy (4047) that can sometimes be used in lieu of the commonly used filler alloy 4043. What are the advantages of using the 4047 filler alloy and when would it make sense to substitute it for filler alloy 4043.
I have heard of a welding process called Friction Stir Welding. Apparently, it is quite new and it is a particularly good process for welding aluminum. Can you give me some information on this process and the types of applications for which it is used?