• Specification:
  • Model: ER4043
  • Diameter:  0.035" (0.9mm) 
  • Roll Weight: 1 Lb
  • Quantity: 6 Rolls
  • Material: Aluminum
  •  
  • Description:
  • ER4043, commonly referred to as “AlSi5", has a 5% silicon and is the oldest and one of the most widely used aluminum welding wires for general purpose applications.
  • Less sensitive to weld cracking than other aluminum alloys and the 5% silicon content lowers the melting point, increases fluidity of the weld puddle and leaves a bright shiny weld deposit.
  • ER4043 is commonly used for welding grades 6061, 6063, 5052, 3004, 3003 and cast alloys 356.0, 357.0, 413.0, and 443.0 to name just a few.
  • Labwork 6 Rolls ER4043 Aluminum MIG Welding Wire 0.035" (0.9mm) 1-Lb Spool

    Specification:

    Model: ER4043

    Diameter:  0.035" (0.9mm) 

    Roll Weight: 1 Lb

    Quantity: 6 Rolls

    Material: Aluminum

     

    Description:

    ER4043, commonly referred to as “AlSi5", has a 5% silicon and is the oldest and one of the most widely used aluminum welding wires for general purpose applications.

    Less sensitive to weld cracking than other aluminum alloys and the 5% silicon content lowers the melting point, increases fluidity of the weld puddle and leaves a bright shiny weld deposit.

    ER4043 is commonly used for welding grades 6061, 6063, 5052, 3004, 3003 and cast alloys 356.0, 357.0, 413.0, and 443.0 to name just a few.

    Melting range is 1065 °F– 1170 °F, density is 0.097 lbs/in3 and post anodizing color is gray.

     

    Package Including:

    6 Pack ER4043 0.035" Welding Wire 1-lb Roll

     

    Notes:

    Due to manual measurement,please allow a little error and make sure you do not mind before ordering.
    Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object.Please take the real one as standard.


    About Us

    This is Labwork. We offer high quality products, competitive prices and prompt delivery .Please add us to your list of favorite sellers. Our company has experience in serving the global aftermarket. Thank you for your business. Best wishes!

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    Contact Us

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    Labwork 6 Rolls ER4043 Aluminum MIG Welding Wire 0.035" (0.9mm) 1-Lb Spool

    Specification:

    Model: ER4043

    Diameter:  0.035" (0.9mm) 

    Roll Weight: 1 Lb

    Quantity: 6 Rolls

    Material: Aluminum

     

    Description:

    ER4043, commonly referred to as “AlSi5", has a 5% silicon and is the oldest and one of the most widely used aluminum welding wires for general purpose applications.

    Less sensitive to weld cracking than other aluminum alloys and the 5% silicon content lowers the melting point, increases fluidity of the weld puddle and leaves a bright shiny weld deposit.

    ER4043 is commonly used for welding grades 6061, 6063, 5052, 3004, 3003 and cast alloys 356.0, 357.0, 413.0, and 443.0 to name just a few.

    Melting range is 1065 °F– 1170 °F, density is 0.097 lbs/in3 and post anodizing color is gray.

     

    Package Including:

    6 Pack ER4043 0.035" Welding Wire 1-lb Roll

     

    Notes:

    Due to manual measurement,please allow a little error and make sure you do not mind before ordering.
    Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object.Please take the real one as standard.



    This is Labwork. We offer high quality products, competitive prices and prompt delivery .Please add us to your list of favorite sellers. Our company has experience in serving the global aftermarket. Thank you for your business. Best wishes!

    Before leaving us neutral or negative feedback, please contact us first.
    We will do everything we can to give you a satisfying solution.
    Please don't open case via eBay or PayPal.
    Please don't open any return request before contact us.
    We do our best to resolve any issue. Leaving negative feedback and low ratings doesn't get things solved.
    So please talk with us and we will not let you down.

    If you have problem, please do not hesitate to contact us by eBay message. We will respone ASAP.
    We appreciate feedback from our customers and strive to maintain a rating as close as possible to 100% perfect "Five-Star." If anything about your transaction did not meet your expectations, please let us know and provide us with the opportunity to fix our issues before you leave feedback. Customer service is very important to us , hope you can enjoy our store.


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    On May 24, 2026 at 18:53:41 PDT, seller added the following information:

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