The Weld Star ER5356 (AlMg5) Aluminium TIG Wire is a high-magnesium aluminium filler designed for TIG (GTAW) welding of medium- and high-strength aluminium alloys containing up to approximately 5 % magnesium. With its elevated magnesium content, ER5356 delivers stronger weld metal and excellent resistance to corrosion — especially in marine and outdoor environments — compared with general-purpose aluminium rods.
This versatile welding wire can be used on a wide range of 5xxx series aluminium alloys and is suitable for both structural fabrication and repair applications. It also performs well when anodising is required, making it a popular choice in automotive, boatbuilding, storage tank, pressure vessel and lightweight structural work.
ER5356 aluminum welding wire is designed for welding aluminum alloys, particularly the 5xxx series. It is one of the most widely used wires thanks to its excellent corrosion resistance and mechanical properties. Manufactured according to EN ISO 18273, it ensures durable welds in automotive, construction, and marine industries.
Key Features
High-Strength Aluminium-Magnesium Alloy: ER5356 contains about 5 % magnesium, providing higher weld metal strength than lower-alloyed aluminium fillers.
Excellent Corrosion Resistance: Good performance in seawater and chemical atmospheres makes this filler well suited to marine and outdoor structural welding.
Good Weldability and Appearance: Delivers stable arc characteristics and smooth wetting action in TIG applications.
Anodising Compatible: Suitable for use on components that will be anodised, producing welds with good finish quality.
Wide Alloy Compatibility: Works well on common aluminium alloys such as 5052, 5083, 5454, 6061 and 6063 in addition to 5356 base metals.
Versatile Industrial Use: Ideal for automotive, marine construction, rail, pressure vessels and architectural aluminium fabrication.
Standards Compliance: EN ISO 18273 – S Al 5356 (AlMg5Cr(A)) | AWS A5.10 – ER5356.
Typical Chemical Composition (%): Si: ~0.04 | Fe: ~0.16 | Cu: ~0.01 | Mn: ~0.11 | Mg: ~4.83 | Cr: ~0.14 | Zn: ~0.0048 | Ti: ~0.094 | Be: <0.0001 | Al: Balance.
Mechanical Properties (Typical): Tensile Strength: ≥235 MPa | Yield Strength: ≥110 MPa | Elongation: ≥17 % | Impact Strength: ≥16 J (Values may vary depending on welding parameters, base material and shielding gas).
Shielding Gas: TIG – I1, I3 (Argon) per EN ISO 14175.
Welding Positions: PA, PB, PC, PD, PE, PF, PG per EN ISO 6947.
Workshop-Friendly Packaging: Supplied on 2.5kg spools with common TIG diameters 2.40mm; each spool 1000mm in length.
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