Alumimium Alloy

The most used aluminium alloys are the EN AW-6063/T6 with natural fi nishing for the extrusions and the EN AW-5052 or 5754 [P-AlMg3] for the rolled sections subject to transformation workings (punching, bending, etc.). Magnesium as an alloying element and manganese, silicon and chromium as additives, give in any case to metal marked mechanical characteristics, high workability, good weldability and good corrosion resistance.
As to the last one, we have to say that aluminium protects itself spontaneously: metal exposed to the atmosphere immediately reacts with oxygen in the air forming a thin fi lm of aluminium oxide which protects the underlying layer stopping the further atmospheric corrosion and the electrochemical attack typical of the corrosion due to humidity. Thanks to this good level of corrosion resistance this alloy can be used in various application sectors such as building, naval constructions, chemical and food industry, transports and mechanics. The aluminium and its alloys are very often used for their very low electromagnetic conductivity so far to be considered nonmagnetic.

 

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