Abstract: The present invention relates to plates with a thickness of between 8 and 50 mm and made from aluminum alloy with a composition, as % by weight, Si: 0.7-1.3; Mg: 0.6-1.2; Mn: 0.65-1.0; Fe: 0.05-0.35; at least one element selected from Cr: 0.1-0.3 and Zr: 0.06-0.15; Ti<0.15; Cu<0.4; Zn<0.1; other elements <0.05 each and <0.15 in total, the remainder aluminum, and the method for manufacturing same. The plates according to the invention are particularly useful as precision plates, in particular for producing elements of machines, for example assembly or inspection equipment. The plates according to the invention have improved dimensional stability in particular during the machining steps, while having sufficient static mechanical properties, and excellent suitability for anodizing.

Abstract: The invention relates to a thin sheet metal for a reinforcing or structural part of a car body, consisting of an aluminum alloy. The invention also relates to the method for producing such a sheet metal and to the use of such a sheet metal for producing a reinforcing or structural part for a car body. The sheet metals according to the invention advantageously have a modulus of elasticity of at least 77 GPa.

Abstract: The invention relates to a thin sheet metal for a reinforcing or structural part of a car body, consisting of an aluminium alloy of the following composition, in weight per cent: Si: 10-14; Mg: 0.05-0.8; Cu: 0-0.2; Fe: 0-0.5; Mn: 0-0.5; optionally at least one element selected from Na, Ca, Sr, Ba, Yt and Li, the quantity of said element if selected being between 0.01 and 0.05 for Na, Ca, Sr, Ba and Yt and between 0.1 and 0.3 for Li; Sb: 0-0.05; Cr: 0-0.1; Ti: 0-0.2; other elements amounting to <0.05 each and a total of <0.15; and the remainder being aluminium. The invention also relates to the method for producing such a sheet metal and to the use of such a sheet metal for producing a reinforcing or strucural part for a car body. The sheet metals according to the invention advantageously have a modulus of elasticity of at least 77 GPa.