Aluminum Welding Wire ER4043
ER4043 Aluminum Welding Wire
.030“ ER4043 aluminum welding wirre

ER4043/1LB-0.8 1LB Spool .030" Silicon Aluminum MIG Welding Wire


Regular price23.00
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Aluminum welding wire ER4043 is a general-purpose type aluminum welding wire. It contains silicon additives, which result in improved fluidity (wetting action) of the weld pool and also produces a weld less sensitive to cracking. Its bright weld finish makes it a popular choice of welders. It can be used to weld various grades of aluminum.

  • 5% silicon aluminum (AlSi5) filler metal welding wire for MIG welding process.
  • The silicon additions result in improved fluidity (wetting action) to make the alloy a preferred choice by welders. Less sensitive to weld cracking and produces brighter.
  • It can be used to weld various grades of aluminum, 3003, 3004, 5052, 6061, 6063, and casting alloys 43, 355, 356, and 214.

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Customer Reviews

Based on 7 reviews
kim DiDonato-Murrell

I have been using this wire to weld 0.060" Aluminum sheet, and it works really well.MIG Welder, 100% Argon gas, you need to use a Spool gun, and it takes a while to dial it in. You need to practice, but now I can weld corner seams, and butt joints.You need to keep moving, if you stay in one spot it will burn through, but the results are totally acceptable!

H. Valencia

The wire performed perfectly

Jason Duclos

Worked great

Daniel J.

Good quality wire. Works as expected.

Desiree pike