View Full Version : which alum wire

03-22-2004, 02:47 PM
hey guys .......i wanna try some aluminum and i found a post on here that said ,lincoln website has a good article on aluminum welding......i read it and it says"You will not obtain good results attempting to weld on aluminum with a steel wire electrode.

Instead, our recommendation is that compact MIG welders should be limited to .035" diameter 4043 aluminum alloy filler metal. A 5356 aluminum alloy electrode may commonly be recommended by retailers and distributors, since it is a stiffer wire and can be easier to feed. However, with these types of wire feed welders, there is often not enough amperage to achieve a good weld with 5356. Even though 4043 is a softer wire, following the proper steps outlined below will ensure good feedability.

Do not use other diameter wires. Specifically, you should avoid 0.030" wire (it is difficult to feed) and 3/64" wire (these compact machines do not typically produce enough current to reliably melt this diameter of wire)."
so is 4043 better? and what diam do i use.....in the article it says avoid .030.why......isnt .035 thicker than.030? my steel wire is .030..............i'm confused lol
thanks guys

03-22-2004, 02:58 PM
The article is pretty much bang on. I have a sp175 and it runs 035 4043 real well.I have run 030 4043 but you have to make sure the gun is real straight.Don't waste your time with 5356. Scott.

03-22-2004, 03:06 PM
thanks scott.......i hve one more question.....if iget .030 4043 i need an .030 teflon liner right and same for .035 i need an .035 liner?

03-22-2004, 05:49 PM
4043 is the most forgiving alloy and has the least cracking tendancy when used to join other aluminum alloys. Scott is right. Forget the 5356.

03-22-2004, 05:58 PM
ok great ty guys

03-22-2004, 07:04 PM
I run both sizes of wire through my regular liner without a problem.Try it first and if all goes well then buy a teflon liner. Good luck. Scott.