4943 aluminum rod

[norson]

Originally Posted by crystallographic

Good chance that your frame is 6061 or 6063, depending on when the frame was produced. Early ones may be 3003 or 1100.
Using a 4000 filler will leave a dark weld fillet after polishing.

But 5356 would be ok???

[crystallographic]

Originally Posted by norson

But 5356 would be ok???

Might as well give it a try.