MW-4145 AlSi10Cu4 Aluminium Welding Wire

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MW-4145 was originally developed as a brazing alloy due to its low melting point and high fluidity. This alloy is scarcely susceptible to cracking when used to weld alloys of series 2XXX or aluminium-copper-silicon alloys. It can be used for applications were high temperatures are required. This alloy is usually preferred to the MW-2319 alloy as it flows better in the weld pool. The weld bead has a brighter and a more “smut free” appearance with respect to other alloys. It has an ultimate tensile strength lower than alloy MW-2319. It is not recommended to use this alloy for welding aluminium alloys with a high magnesium content.

Chemical Analysis

  • Si 9,3 -10,7
  • Fe <0,80
  • Cu <3,3 - 4,7
  • Mn <0,15
  • Mg <0,15
  • Zn <0,20
  • Be <0,0003
  • Others <0,05
  • Others, total <0,15

Classification

  • EN ISO 18273 : S Al4145
  • Material No : 3.2585
  • AWS A 5-10 : ER4145

Physical properties of pure weld metal (Approx. values)

  • Melting point : 521-585°C
  • Density : 27,40 gr/cm3
  • Anodization colour : Grey

Dimensions available Ø

  • GMAW: 1.0mm, 1.2mm, 1.6mm
  • GTAW. 1.6mm, 2.0mm, 2.4mm, 3.2mm

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