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  1. #1
    Join Date
    Sep 2013
    Posts
    18

    Default Aluminum Wire Question

    What's the difference in 4043 and 5356 wire. I need to weld up a heavy duty Jon boat. Which wire should I use. Thanks for any advice.

  2. #2
    Join Date
    Apr 2013
    Location
    Southeast idaho
    Posts
    30

    Default Aluminum Wire Question

    With aluminum there is different compositions, just like with steel there is low carbon, medium carbon (a 36) and high carbon,. You need to figure out what type of aluminum you'll be welding and that will tell you which wire to use… if you use the wrong wire your weld will break right down the middle

  3. #3
    Join Date
    Dec 2010
    Posts
    295

    Default

    I do a lot of aluminum work and I never really looked at the wire I use. I took a look a few minutes ago and I have been using 4043. I weld tool boxes and I also do boat repair with it and never had any problem with it.but i'm with you on this one and would like to know if you have to match the wire with the plate or if it even matters?

  4. #4
    Join Date
    Nov 2003
    Posts
    2,983

    Default Aluminum Welding Guidelines...

    Maxal Aluminum Welding Handbook..

    a really good overview for TIG and MIG

    including setup, parameters for different alloys and GOTCHAS...

    http://www.maxal.com/files/QuickSite...g_6-11_doc.pdf __________________
    .

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  5. #5
    Join Date
    Feb 2010
    Location
    YOUNGSTOWN, OHIO
    Posts
    172

    Default

    In a nut shell,

    4043 has a much higher silicon content which results in improved fluidity (wetting action). it is also less sensitive to weld cracking. Very easy to work with.

    5356 has lower silicon which makes it a little more difficult to work with, but much higher magnesium content which produces a stronger weld.
    JIM

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  6. #6
    Join Date
    Aug 2004
    Location
    Milan Michigan
    Posts
    1,671

    Default

    I'm not a boat expert, but most boats that live in a salt water atmosphere are probably 5356 which offers better corrosian resistance.

    4043 is a little easier to work with smooths out better while 5356 is more of a structural wire for strength.

    I'm not sure what a john boat is but I have fixed alot of small aluminum boats that are in fresh water small lakes with 4043

  7. #7
    Join Date
    Feb 2010
    Location
    YOUNGSTOWN, OHIO
    Posts
    172

    Default

    JIM

    Owner Operator of JNT Mobile Welding & Repair LLC
    Millermatic 350P Aluma Pro
    Dynasty 200DX
    Maxstar 150 STL
    Trailblazer 302
    Suitecase 12RC
    Extreme 12VS
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    Passport Plus
    Spoolmate 100
    Hypertherm Powermax 45 and 85
    Ingersoll Rand Engine Driven Compressor
    Dake 75 ton H-Frame Press
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  8. #8
    Join Date
    May 2012
    Posts
    27

    Default aluminum wire

    I use 5356 on anodized aluminum or aluminum that is not new. It welds awsome on aluminum that needs alot of cleaning action. If your going to anodize the aluminum 4043 is your ticket. Hope this helps. Good luck

  9. #9
    Join Date
    Dec 2012
    Location
    Front Royal, Va
    Posts
    64

    Default

    Huh? Anodize 4043.
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  10. #10
    Join Date
    Nov 2010
    Location
    Oregon
    Posts
    45

    Default Aluminum Wire Question

    You don't want to weld anything that's going to be anodized with 4043, the weld will come out very dark, a piece that will be clear anodized, the weld itself will be almost black. Use 5356 alloy only.
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