What kind of filler metal is the alloy 4043?

aluminum filler alloy
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.

Can you anodize 4043 aluminum?

A weld with 4043 that is anodized will stick out since it will anodize a dark gray.

What aluminum filler rod do you use for anodizing?

5356 welded rod
Parts can be welded prior to anodizing. The use of 5356 welded rod is strongly recommended, though some discoloration will still occur. 4043 is the worst choice because it will turn a sooty black when anodized.

What is the best aluminum wire for welding?

Choose a Wire to Weld Aluminum Most professionals suggest using . 030 or . 035 in. diameter aluminum wire for aluminum welding projects.

Can you anodize aluminum after welding?

Parts can be welded prior to anodizing. The use of 5356 welded rod is strongly recommended, though some discoloration will still occur. 4043 is the worst choice because it will turn a sooty black when anodized.

What is the thinnest aluminum you can Mig Weld?

MIG Welding Aluminum Basics Aluminum is a tricky metal to weld with a MIG welder because it takes more heat than mild steel (Usually in the range of 21 to 24 volts). The minimum aluminum thickness you should attempt is roughly 14 ga. To 18 ga. Any thinner than that and you’ll need a TIG welder.

Can you MIG weld aluminum without a spool gun?

The answer is yes and no, depending on the user’s preference, you do not necessarily need a spool gun to weld aluminum. Depending on the application, some have found success in taking a ten- or twelve-foot MIG gun and running a Teflon liner through it, then calling it a day.