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? Böhler UNION AlMg 5 1.0 mm x 7 kg welding wire – Professional quality for aluminum and marine environments

Böhler UNION AlMg 5 welding wire with a diameter of 1.0 mm and a weight of 7 kg is a high-performance solid GMAW (MIG) wire designed for welding aluminum alloys containing up to 5% magnesium (Mg). Thanks to its excellent resistance to marine corrosion, it is ideal for welding structures exposed to seawater and weather conditions.

Moreover, after anodizing, the weld blends perfectly with the base material, providing an aesthetic finish. For best welding results, it is necessary to thoroughly clean the edges of the parts to be welded, and for thicker sheets (over 15 mm) it is recommended to preheat them to about 150°C.

? Key features of Böhler UNION AlMg 5 1.0 mm x 7 kg wire

✅ Professional GMAW (MIG) welding wire – for aluminum and its alloys.
✅ Diameter 1.0 mm, spool 7 kg – perfect for industrial applications.
✅ Compliance with international standards:

• AWS A5.10 – ER5356
• EN ISO 18273 – S Al 5356
  ✅ Very high resistance to marine corrosion – ideal for welding parts exposed to seawater and moisture.
  ✅ Excellent color match after anodizing – aesthetically pleasing weld.
  ✅ No additional alloying required – stable arc and excellent wettability.
  ✅ Recommended to heat thicker sheets up to 150°C – for better joint quality.

Due to these properties, Böhler UNION AlMg 5 wire is excellent for use in:
? Aluminum structures exposed to corrosion
? Welding of ship hulls and marine infrastructure components
? Production of architectural and industrial structures
? Repairs of aluminum castings

? Technical specifications – Böhler UNION AlMg 5 1.0 mm x 7 kg

? Wire type: Solid, GMAW (MIG)
? Wire diameter: 1.0 mm
? Spool weight: 7 kg
? Classification:

• AWS A5.10 – ER5356
• EN ISO 18273 – S Al 5356
  ? Wire chemical composition (%):
  • Mg (magnesium): 4.5 – 5.5%
  • Si (silicon): < 0.25%
  • Fe (iron): < 0.4%
  • Mn (manganese): < 0.15%
  • Cr (chromium): < 0.15%
  • Zn (zinc): < 0.10%
  • Al (aluminum): balance
    ? Mechanical properties of the alloy:
  • Yield strength (Rp0.2): ≥ 110 MPa
  • Tensile strength (Rm): ≥ 230 MPa
  • Elongation (A): ≥ 15%
    ? Recommended welding conditions:
  • Shielding gas: Argon (I1) or argon-helium mixtures (I3).
  • Welding current: DC (+).
  • Material preparation: Heating to 150°C for thicker parts.

? Why should you choose Böhler UNION AlMg 5 wire?

✔ Top quality from Böhler, the world leader in welding technology.
✔ Excellent resistance to water and atmospheric corrosion – durable and reliable connections.
✔ Stable arc and minimal chipping – comfortable and precise work.
✔ Ideal for marine, aerospace and construction applications.

As an official distributor of Böhler Welding, we offer original products at competitive prices. Check out our offer and see why professionals choose Böhler UNION AlMg 5!