You might be able to get to get aircraft-grade alloy such as 2024 from some of the standard metal suppliers such as Reynolds but if you mention building an aircraft, they won't give you a certificate.You may not even get a cert, at all...You'll probably just have to order it in from England.Try the BMAA or LAA for sources.
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"Aircraft grade Aluminium" is the umbrella term for many Alumunium alloys which are used in the aircraft industry. Some are Al alloyed with Zinc, others with Copper, Silacon or Magnesium.
THEY ALL HAVE DIFFERENT PROPERTIES!
Do you know exactly the alloy which you need for the specific job you ave at hand?
Do your homework. Some have crap resistance to corrosion ad need to be coated or anodized. Some are best loaded in tension (i.e. for lift struts) and others have are used for their resistance to bending. It all depends on the mechanical properties of the alloy in question, which in turn depend on the alloying metal used. This is what gives an alloy its grade.
Check these out:
http://www.sae.org/servlets/product?PRO ... H_CD=ALUMI
Use ctrl+F to find the grades you want quickly.
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