535636416C - Nexalloy 5356 Aluminum MIG Wire 3/64" (0.045") - 16lb Spool

Technical Overview of Nexalloy 5356 Aluminum MIG Wire

Nexalloy 5356 is a premium aluminum-magnesium filler metal classified under AWS A5.10 as ER5356. This alloy is the most widely utilized general-purpose aluminum filler metal, specifically engineered for welding 5XXX series base alloys where tensile strength is a critical requirement. The chemical composition includes approximately 5% Magnesium (Mg), with controlled additions of Manganese (Mn), Chromium (Cr), and Titanium (Ti). These alloying elements work synergistically to refine the grain structure of the weld deposit, significantly enhancing mechanical properties and corrosion resistance compared to standard aluminum fillers.

One of the defining characteristics of Nexalloy 5356 is its superior performance in corrosive environments. The elevated magnesium content, combined with the reduction of silicon, makes this alloy exceptionally resistant to saltwater corrosion, establishing it as the industry standard for marine fabrication and shipbuilding. In terms of mechanical properties, the as-welded tensile strength typically ranges between 38,000 and 40,000 psi, which is substantially higher than that of ER4043. Furthermore, ER5356 exhibits high shear strength, making it the preferred choice for fillet welds in structural applications.

For applications requiring post-weld anodizing, Nexalloy 5356 offers a distinct advantage. Unlike silicon-heavy alloys like 4043, which tend to turn a dark gray or black upon anodizing, 5356 maintains a clear, white color that closely matches the base metal, ensuring an aesthetically pleasing finish. However, it is important to note the service temperature limitations; ER5356 is not recommended for applications where the service temperature will consistently exceed 150°F (65°C), as the 5% magnesium content can make the alloy susceptible to stress corrosion cracking under sustained thermal stress. This wire is designed for use with Direct Current Electrode Positive (DCEP) polarity and requires 100% Argon or Argon/Helium shielding gas mixtures.