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公开(公告)号:US20210130933A1
公开(公告)日:2021-05-06
申请号:US16492085
申请日:2019-03-01
Applicant: CONSTELLIUM ISSOIRE
Inventor: Guillaume DELGRANGE , Christophe CHABRIOL , Romain-Fabrice BERNES
Abstract: The invention relates to a vacuum chamber element obtained by machining and surface treatment of a plate of thickness at least equal to 10 mm made of aluminium alloy composed as follows (as percentages by weight), Si: 0.4-0.7, Mg: 0.4-1.0; the Mg/Si ratio as a percentage by weight being less than 1.8; Ti: 0.01-0.15, Fe 0.08-0.25; Cu