Heat Treatable Alloys
Based on Al-Cu and Al-Cu-Mg (Duralumin)
Al-Cu alloys such as 2219 can have yield strengths up to 520MPa
Typically Al-Cu-Mg-Mn alloys such as 2014 are used in structural applications with a yield strength of 415MPa
High strength alloys are used in aircraft construction, lower strength alloys for car bodies