Abstract: A casting alloy of the AlMgSi type comprises Magnesium 3.0 to 7.0 wt. % Silicon 1.7 to 3.0 wt. % Manganese 0.2 to 0.48 wt. % Iron 0.15 to 0.35 wt. % Titanium as desired max. 0.2 wt. % Ni 0.1 to 0.4 wt % and aluminum as the rest along with production related impurities, individually at most 0.02 wt. %, in total at most 0.2 wt. %, with the further provision that the magnesium and silicon are present in the alloy in a Mg:Si weight ratio of 1.7:1, corresponding to the composition of the quasi binary eutectic made up of the solid state phases Al and Mg2Si, whereby the deviation from the exact composition of the quasi-binary eutectic amounts to at most −0.5 to +0.3 wt. % for magnesium and −0.3 to +0.5 wt. % for silicon the finely dispersed precipitates of the intermetallic phase Mg2Si results in high ductility.

Abstract: A casting alloy of the AlMgSi type comprises 1 Magnesium 3.0 to 7.0 wt. % Silicon 1.7 to 3.0 wt. % Manganese 0.2 to 0.48 wt. % Iron 0.15 to 0.35 wt. % Titanium as desired max. 0.2 wt. % Ni 0.1 to 0.

Abstract: In a process for manufacturing a fine-grained recrystallized sheet of heat-treatable i.e. age-hardenable aluminum alloy containing an addition of at least one of the elements Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W amounting in total to 0.08-1.50%, the alloy is brought into a condition A in which the alloying elements that lead to age-hardening and the above mentioned additive elements are, at least for the greater part, in solid solution, following which in step B the incoherent hardening phases are precipitated out in a temperature range between the solvus T.sub.gps and the solvus T.sub.s, and in a subsequent step C the aluminides of the above mentioned elements are precipitated as a very dense uniform dispersion by heating in a temperature range between 300.degree. C. and T.sub.s -30.degree. C., whereby any deformation by rolling may take place between condition A and step C at temperatures not higher than T.sub.s -30.degree. C., and in which process the temperature of the sheet below a thickness or 2.

Abstract: Continuous process for anodizing and subsequent electrolytic coloring of an aluminium strip or foil with A.C. in which the strip after leaving the anodistaion unit passes through an aqueous acidic contacting electrolyte, e.g. dilute sulfuric acid, and then through the aqueous acidic coloring electrolyte containing metal ions and in which the A.C. source is connected to inert electrodes dipping in the contacting and in the coloring electrolyte respectively.