ALUMINUM ALLOY SHEETS FOR VACUUM CHAMBER ELEMENTS

Abstract

A process for producing a sheet with a final thickness of 6 to 50 mm, comprising: a) casting a rolled plate of an aluminum alloy in weight percent where: 0.6-1.3; Mg: 0.6 - 1.2; Mn: 0.65-1.0; Fe: 0.04 - 0.20; Cr ≤ 0.05; Ti ≤ 0.15; Cu ≤ 0.1;other elements each < 0.05 and < 0.15 total, remaining aluminum, b) the rolled plate is homogenized, c) the rolled plate is rolled with an inlet temperature of at least 500 °C to obtain a sheet with a thickness of at least 8 mm, d) optionally an intermediate heat treatment is carried out, e) cold rolling of the hot-rolled and optionally heat-treated sheet with a thickness reduction of at least 20%, f) solution annealing and quenching of the cold-rolled sheet in this way, g) the sheet is relieved by controlled drawing with a permanent elongation of 1 to 5% so that it is dissolved and hardened, h) quenching and tempering of the drawn sheet in this way, i) optionally the heated sheet is manufactured.;