GMAW-GTAW Solid wires
Aluminium silicon alloy for welding cast aluminum parts, also suitable as brazing alloy with suitable flux
Aluminium alloy for welding and brazing. This material is generally used for brazing aluminium sheets, for extrusions and castings. (After anodizing the welding will be of a different colour)
AlSi12 was originally developed as a brazing alloy to take advantage of its low melting point and narrow freezing range. In addition, it has a higher silicon content than AlSi5, which provides increased fluidity and reduced shrinkage. Hot cracking is significantly reduced when using AlSi12 as a filler alloy. The alloy may be used in applications at sustained elevated temperatures. Non-heat treatable. Thicker sections should be preheated (150°C) prior to welding.
- AWS:A 5.10: ER 4047
- EN ISO:18273: S Al4047A (AlSi12(A))
- DIN: W.Nr3.2585
- DIN:1732: SG AlSi12