Aluminium Aluminium 4043

Aluminium wire feedstock ER4043 is a popular alloy used in many welding applications. It is a versatile wire feedstock offering good weldability, corrosion resistance, and mechanical properties, making it suitable for various WAM® applications.

ER4043 primarily consists of aluminium with a small amount of silicon. The silicon content enhances the alloy’s fluidity during the metal 3D printing, or Wire Additive Manufacturing (WAM®) process, which improves weld penetration and reduces the likelihood of defects such as porosity. The silicon also contributes to the alloy’s corrosion resistance.

Commonly used in the Maritime industry, ER4043 offers good resistance to atmospheric corrosion, making it suitable for applications exposed to outdoor environments. Using AMLSoft™, specific WAM® parameters can be adjusted to enhance ER4043 material properties. However, products may require post-weld heat treatment (PWHT) to achieve optimal tensile and yield strengths.

Material Applications:

Lighter parts

Increased conductivity


Resistant to corrosion


Heat treatable

Suitable for:




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