4043 and 5356 aluminium TIG filler rods and wires are designed for welding delicate aluminium components & demanding structural projects alike. 4043 offers bright eye pleasing welds with good crack resistance, whilst 5356 offers great corrosion resistance & high strength. Both grades are available in 1.6mm, 2.4mm & 3.2mm diameters & with manufacturers' test certification.

Key differences between 4043 & 5356 aluminium TIG filler rods?

4043 (NG21 Silicon alloy)

• 4043 aluminium alloy rods have a 5 % silicon content offering excellent fluidity, a superior wetting action ideal for intricate welds and minimizing the risk of cracking.
• Produces aesthetically pleasing, shiny weld beads with minimal porosity.
• Suitable for welding heat treatable base alloys, as well as cast and wrought aluminium.
• High silicon content reduces cracking, especially on 6061 grade material.
• 4043 has a lower melting point, making it easier for novice welders.
• Great for cast aluminium repairs and 6061 & 6063 grade material.

5356 (NG6 Magnesium alloy)

• 5356 filler wire contains 5 % magnesium & offers exceptional corrosion resistance, particularly useful under marine conditions.
• Offers superior tensile strength for high stress applications. Utilised widely in the transport sector.
• Provides excellent ductility, allowing for easier shaping and forming post-weld.
• Ideal for structural applications & projects where durability and strength are crucial.
• Post anodizing, provides a good colour match.