4047 TIG Filler Wire

ER4047 TIG Filler Wire — High-Silicon Aluminum Filler for Smooth Flow and Crack Resistance

ER4047 is a silicon-rich aluminum TIG filler wire designed for welding cast and wrought aluminum alloys, especially those in the 6XXX series. Its high silicon content improves fluidity, reduces cracking, and provides excellent corrosion resistance, making it ideal for demanding aluminum welding tasks.

Key Features

• High Silicon Content (≈11–13%) – Enhances puddle flow, minimizes shrinkage, and reduces the risk of hot cracking.

• Lower Melting Point – Allows easier fusion and improved control of the weld pool, reducing distortion on thinner materials.

• Excellent Corrosion Resistance – Suitable for components exposed to atmospheric or moisture-rich environments.

• Smooth Bead Appearance – Produces attractive welds with minimal finishing required.

• Minimal Distortion – Reduced shrinkage during cooling helps maintain part integrity.

• Versatile Diameters – Common sizes include 1.6 mm, 2.4 mm, and 3.2 mm to suit a variety of applications.

Ideal Applications

• Welding or repairing aluminum castings.

• Joining 6XXX-series aluminum alloys like 6061 and 6063.

• Automotive and aerospace components where crack resistance is critical.

• Decorative or structural aluminum projects that require excellent weld appearance.

• Situations where a darker anodized color after finishing is acceptable or desired.

The ER4047 TIG Filler Wire offers superior flow characteristics, strong corrosion resistance, and reduced cracking risk—making it the go-to choice for high-quality aluminum welding and repair.