5356 Aluminium TIG Rods

5356 Aluminium TIG Rods 

5356 aluminium TIG rods (classified as ER5356) are high-strength aluminium-magnesium filler metals designed for TIG (GTAW) welding of 5xxx series aluminium alloys, as well as certain 6xxx series materials. With a magnesium content of approximately 5%, these rods provide excellent mechanical strength, corrosion resistance, and weld durability, making them one of the most widely used aluminium fillers in fabrication and repair work. Supplied in 2.5Kg packs.

Why Use 5356 Aluminium TIG Rods?

High Strength Weld Deposits

ER5356 rods produce welds with significantly higher tensile strength compared to alternatives such as 4043. This makes them ideal for applications where structural integrity and load-bearing capacity are critical.

Typical benefits include:

• Higher tensile strength (approx. 260–300 MPa)

• Improved fatigue resistance

• Stronger joints in dynamic or stressed components

Excellent Corrosion Resistance

The magnesium content enhances resistance to marine and atmospheric corrosion, particularly in saltwater environments. This makes 5356 rods well suited for:

• Marine fabrication

• Offshore equipment

• Outdoor structural applications

They provide long-term durability in harsh environments where standard aluminium fillers may degrade more quickly.

Good Colour Match After Anodising

5356 filler rods offer a better colour match after anodising compared to 4043 rods, which tend to appear darker. This makes them the preferred choice for:

• Architectural aluminium

• Visible welds

• Decorative or cosmetic applications

Compatibility with 5xxx and Some 6xxx Alloys

5356 rods are commonly used to weld:

• 5xxx series aluminium (e.g. 5052, 5083, 5086)

• Selected 6xxx series alloys (e.g. 6061) where higher strength is required

They maintain good mechanical properties and corrosion resistance when used with these base materials.

Good Weldability and Arc Stability

5356 TIG rods provide reliable welding characteristics, including:

• Smooth and stable arc performance

• Good weld pool control

• Low porosity when used with proper technique

• Clean, consistent bead appearance

These properties make them suitable for both production welding and precision fabrication.

Suitable for Higher Temperature Service (with Limitations)

5356 weld metal performs well in many environments but is generally recommended for service temperatures below 65°C (150°F) for critical applications, as prolonged exposure above this range can reduce corrosion resistance due to stress corrosion cracking in certain conditions.