公开(公告)号：US11505851B2

公开(公告)日：2022-11-22

申请号：US16955425

申请日：2018-12-21

Applicant: NHK Spring Co., Ltd.

Inventor： Takeshi Suzuki ,  Junichi Nakano

IPC: C22C21/10 ,  C22F1/05 ,  C22F1/053 ,  F16B33/00 ,  F16F1/02 ,  B60G21/055 ,  F16F1/06 ,  F16F1/18

Abstract: An aluminum alloy according to the present invention includes 1.2% by mass to 4.0% by mass of copper, 4.0% by mass to 14.0% by mass of zinc, 0.5% by mass to 4.0% by mass of magnesium, 0.01% or less of silicon, and 0.01% or less of iron, with the balance containing aluminum and inevitable impurities, and has an average equivalent circle crystal grain size of 500 nm or less.

公开(公告)号：US20210010111A1

公开(公告)日：2021-01-14

申请号：US16955425

申请日：2018-12-21

Applicant: NHK Spring Co., Ltd.

Inventor： Takeshi Suzuki ,  Junichi Nakano

IPC: C22C21/10 ,  C22F1/053 ,  F16F1/02 ,  F16B33/00

Abstract: An aluminum alloy according to the present invention includes 1.2% by mass to 4.0% by mass of copper, 4.0% by mass to 14.0% by mass of zinc, 0.5% by mass to 4.0% by mass of magnesium, 0.01% or less of silicon, and 0.01% or less of iron, with the balance containing aluminum and inevitable impurities, and has an average equivalent circle crystal grain size of 500 nm or less.