JA4032 - Josef Gas ER4043 Aluminum TIG Rod 1/8" (3.2mm) - 10lb Tube

Premium ER4043 Aluminum TIG Filler Metal

The Josef Gas JA4032 is a high-performance ER4043 aluminum TIG welding rod designed for professional fabrication and repair applications. Engineered with a 5% silicon content, this alloy (AlSi5) is one of the most versatile and widely used aluminum filler metals in the industry. The addition of silicon significantly lowers the melting point and increases the fluidity of the weld pool, providing excellent wetting action and a smooth bead profile. This specific characteristic makes the JA4032 an optimal choice for welders seeking to minimize solidification cracking, a common issue when welding heat-treatable aluminum alloys.

With a diameter of 3.2mm (1/8 inch), this rod is substantial enough for welding medium-to-heavy gauge sections, typically ranging from 1/8 inch up to 3/8 inch thick base materials. It is particularly well-suited for joining 6xxx series alloys (such as 6061) to themselves or to 5xxx series alloys, as well as for welding cast aluminum components (like 356.0). The JA4032 ensures consistent arc stability and clean X-ray quality welds when proper cleaning and shielding gas procedures are followed.

Manufactured to strict tolerances, Josef Gas TIG rods undergo rigorous quality control to ensure surface cleanliness and chemical consistency. The rods are supplied in a robust 10lb tube, protecting the filler metal from atmospheric contaminants and physical damage during storage and transport. Whether used for automotive components, bicycle frames, or general industrial fabrication, the JA4032 delivers reliable mechanical properties and an aesthetically pleasing finish.

Technical Specifications

• Classification: AWS A5.10 ER4043
• Diameter: 3.2mm (0.125")
• Composition: Aluminum Remainder, Silicon 4.5-6.0%
• Melting Range: 1065°F - 1170°F
• Post-Weld Color: Gray (anodizing color match may vary)