Aluminum alloy strip for making lithographic plates and production process.

摘要

A litho strip for chopped electrochemical, which is manufactured from a hot rolled strip having a layer of recrystallized surface fine grain made of an alloy of aluminum laminate which, besides the impurities due to manufacturing, contains the following elements: 0, 30-0, 40% Fe, 10 0, 10 - 0, 30% Mg, 0, 05-0, 25% Si, not more than 0, 05% of Mn, not more than 0 04% Cu, having the litho strip one tensile strength Rm 145 N / mm2 after an annealing of 240 ° C / 10 min, and further the litho strip has a fatigue strength perpendicular reverse bending to the direction laminate 1250 cycles in the reverse bending test and is manufactured from a hot rolled strip having a surface layer with globulitic continuous recrystallized grains of an average diameter of 50 microns.