US 12,134,806 B2
Aluminum alloy for die casting and die cast aluminum alloy material
Izumi Yamamoto, Shizuoka (JP); Tomohiro Isobe, Aichi (JP); and Hiroshi Horikawa, Tokyo (JP)
Assigned to NIPPON LIGHT METAL COMPANY, LTD., Tokyo (JP); and NIKKEI MC ALUMINIUM CO., LTD., Tokyo (JP)
Appl. No. 17/289,436
Filed by NIPPON LIGHT METAL COMPANY, LTD., Tokyo (JP); and NIKKEI MC ALUMINIUM CO., LTD., Tokyo (JP)
PCT Filed Oct. 30, 2019, PCT No. PCT/JP2019/042496
§ 371(c)(1), (2) Date Apr. 28, 2021,
PCT Pub. No. WO2020/095777, PCT Pub. Date May 14, 2020.
Claims priority of application No. 2018-209675 (JP), filed on Nov. 7, 2018.
Prior Publication US 2022/0002845 A1, Jan. 6, 2022
Int. Cl. C22C 21/08 (2006.01); C22C 1/02 (2006.01)
CPC C22C 21/08 (2013.01) [C22C 1/026 (2013.01)] 7 Claims
 
1. A die cast aluminum alloy material made of an aluminum alloy for die casting, the aluminum alloy comprising Mg: 4.7 to 9.0% by mass, Mn: 0.9 to 1.7% by mass and Zn: 1.0% by mass or less, with the balance being Al and unavoidable impurities,
wherein the maximum particle size in a longitudinal direction of a primary crystal Al—Mn-based compound in the die cast aluminum alloy material is 150 μm or less.