US 12,012,648 B2
Aluminum alloy foil
Takashi Suzuki, Susono (JP); and Cui Qi, Susono (JP)
Assigned to MA Aluminum Corporation, Tokyo (JP)
Appl. No. 18/259,333
Filed by MA Aluminum Corporation, Tokyo (JP)
PCT Filed Mar. 11, 2022, PCT No. PCT/JP2022/010809
§ 371(c)(1), (2) Date Jun. 26, 2023,
PCT Pub. No. WO2022/224615, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 2021-072792 (JP), filed on Apr. 22, 2021.
Prior Publication US 2023/0392239 A1, Dec. 7, 2023
Int. Cl. C22C 21/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22F 1/04 (2006.01)
CPC C22C 38/06 (2013.01) [C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 2200/00 (2013.01)] 7 Claims
 
1. An aluminum alloy foil having a composition, comprising: Fe: 1.2% by mass or more and 1.8% by mass or less; Si: 0.05% by mass or more and 0.15% by mass or less; Cu: 0.005% by mass or more and 0.10% by mass or less; and Mn: 0.01% by mass or less, with a remainder being aluminum and inevitable impurities, wherein an average crystal grain size of the aluminum alloy foil is 21.0-28.9 μm, a maximum crystal grain size/the average crystal grain size is <3.0, a Cube orientation density is 5 or more, a Cu orientation density is 20 or less, and an R orientation density is 15 or less.