This European Standard establishes temperdesignations for all forms of wrought aluminiumand aluminium alloys and for continuously castaluminium and aluminium alloy drawing stock andstrip intended to be wrought.NOTE. Some }fThese temper designations may beThe subject ofpatent or patent applications, andTheir listing herein is not tobe construed in any way asThe granting of a license under suchpatent rightAdditional temper designations, conforming toThisstandard, may be standardized with CEN/TC132and AECMA/C5 provided: 一the temper is used or is available for use by more than one user; 一mechanical property limits are defined; 一the characteristics of the temper are significantly different from those of all other tempers which haveThe same sequence of basic treatments and for which designations already have been assigned forThe same alloy and product; 一the following are also defined if characteristics other than mechanical properties are considered significant: 一test methods and limits forThe characteristics; or 一the specific practices used to produceThe temper.