Welding 7 Series Aluminium. The 5xxx series alloys in particular have excellent weldability. The following is a guide as to which series of aluminum alloys are heat treatable and which are not.
Among them super hard aluminum alloy contains zinc lead magnesium and copper alloy close to the hardness of steel. The Basics of Aluminum Welding. 7005 and 7075 aluminium sheet plate are the highest grade in the 7 series.
The first factor a welder must be aware of when working with aluminum is that not every alloy is even weldable using Gas Tungsten Arc Welding GTAW or Gas Metal Arc Welding GMAW techniques.
Learn the tricks to Gas Welding aluminum sheet metal with Mike from Cobra Torches. The 1xxx 3xxx and 5xxx series wrought aluminum alloys are non-heat treatable and are strain hardenable only. 1000 Series is the most pure of aluminumrequired to have 99 minimum aluminum. Fadhlur R M Romlay.