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EX404300000047-M00 - ER4043 Aluminum MIG Wire - 0.047 in (1.2mm) - General Purpose Silicon Alloy

Packaging: 20 lb spool
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OVERVIEW

Industrial Grade ER4043 Aluminum MIG Wire

The EX404300000047-M00 is a premium quality ER4043 aluminum welding wire designed for the Gas Metal Arc Welding (GMAW) process. Featuring a diameter of 0.047 inches (approx. 1.2mm), commonly referred to as 3/64", this wire is a staple in industrial fabrication environments where aluminum joining is required. The 4043 alloy is formulated with approximately 5% silicon, which acts as a critical depression of the melting point, enhancing the fluidity of the weld pool. This characteristic makes it the preferred choice for welding heat-treatable base alloys, specifically the 6xxx series such as 6061 and 6063.

For procurement managers and shop foremen, this wire represents a reliable solution for minimizing downtime associated with feedability issues or weld defects. The silicon content not only aids in wetting but also significantly reduces the alloy's sensitivity to solidification cracking, ensuring structural integrity in the final assembly. It is widely used in automotive manufacturing, frame fabrication, and general repair of aluminum castings. While it typically produces a lower tensile strength than 5356 alloys, its ease of use and superior bead appearance make it the standard for general-purpose applications.

This product is manufactured to meet rigorous industry standards, ensuring consistent diameter control and surface cleanliness. Clean wire is essential for aluminum welding to prevent porosity and liner clogging. This spool is designed for use with standard MIG welding equipment capable of running aluminum, typically requiring a push-pull gun or a spool gun for optimal feeding of the softer aluminum material.

Key Industrial Applications

  • Automotive Components: Welding of frames, panels, and brackets.
  • Architectural Structures: Fabrication of window frames and aluminum furniture.
  • General Fabrication: Repair and assembly of 6061-T6 components.
  • Castings: Repairing defects in 356.0 castings.
Additional Information
Alloy Type:ER4043
Diameter:0.047", 1.2mm (0.045"), 2.0mm (5/64")
Process:MIG (GMAW)
Material:Aluminum
AWS Classification:ER4043
Shielding Gas Requirement:100% Argon, Argon/Helium Mixtures
Wire Diameter:0.047" (1.2mm)
Polarity:DCEP
Welding Position:All Positions
Applications:Automotive components, Bicycles, General fabrication, Aerospace hardware
Packaging Description:20 lb spool
Weld Process:MIG (GMAW)
AWS Spec:ER4043
Packaging:20 lb Spool
Brand:Nexalloy
Position:All Position

INCLUDED

  • 1 x Spool of ER4043 Aluminum MIG Welding Wire (0.047" / 1.2mm)

APPLICATIONS

  • Welding 6061 and 6063 structural aluminum
  • Automotive parts and frames
  • Bicycle frames and components
  • Repair of aluminum castings (356.0)
  • General aluminum fabrication and maintenance
  • Aerospace hardware and fittings

FAQ

4043 contains silicon, making it more fluid and crack-resistant, ideal for 6061 aluminum. 5356 contains magnesium, offering higher strength and better color matching for anodizing, but is more prone to cracking.

100% Argon is the standard shielding gas for ER4043 MIG welding. For very thick sections, an Argon/Helium mixture may be used to increase heat input.

You can, but the weld area will turn a dark gray or black color due to the silicon content. If color matching is important, consider using ER5356 instead.

0.047 inches is approximately 1.2mm. It is also commonly referred to as 3/64 inch.

Yes, ER4043 is the most common filler metal for welding 6061-T6 base material due to its crack resistance.

MIG welding with aluminum wire is performed using Direct Current Electrode Positive (DCEP).

Yes, when MIG welding aluminum, you should use a Teflon, nylon, or plastic liner to minimize friction and prevent wire shaving. Steel liners can contaminate the aluminum.

Typical tensile strength is around 27,000 to 29,000 psi, depending on the base metal and welding conditions.