Aluminum Filler Rod

[Silvic]

Somewhat new (very new) to Aluminum Tig welding.

When is the use of ER 4043 best?
Spec states for
Mainly used for silicon types for welding of 2014, 5052, 6061, 6101 and 6063.


When is the use of ER5356 best?
Spec states for
Mainly used where higher weld strength and greater ductility is required and is compatible with 5050, 5052, 5083, 5154, 5356, 6061 and 6363 alloys.

Any other considerations that I should be aware of?
Thanks

 

[Shield Arc]

Here are a couple charts that may be of some help to you.
This is a good book to have for Tig welding.
A lot of guys who Tig weld aluminum for a living. Have switched from 4043 to 4943 filler.
http://www.maxal.com/4943_datasheet.pdf

 

[yomax4]

5356 is also needed if you want to anodise or color your finished product.