https://www.goodfellow-japan.jp/en/customise/index/index/id/47048/
Customise size request for AB19-FL-000152 - Aluminium alloy 6061 Foil 2.00000mm Al97.5/Mg 1/Si...
Submit a customise size request for AB19-FL-000152 - Aluminium alloy 6061 Foil 2.00000mm Al97.5/Mg 1/Si 0.6/Fe 0.5/Cu 0.4 T6 if you can't find what you need
https://archive.computerhistory.org/resources/text/algol/algol_bulletin/A19/P4.HTM
AB19.4
https://archive.computerhistory.org/resources/text/algol/algol_bulletin/A19/P23.HTM
AB19.2.3
https://archive.computerhistory.org/resources/text/algol/algol_bulletin/A19/P39.HTM
AB19.3.9