Aluminum alloy sheet and production method therefor

Abstract

An aluminum alloy sheet according to the present disclosure includes 0.05 to 0.60% by mass of Si, 0.05 to 0.80% by mass of Fe, 0.05 to 0.25% by mass of Cu, 0.80 to 1.50% by mass of Mn, 0.80 to 1.50% by mass Mg, Al, and inevitable impurities. In this aluminum alloy sheet, a 45° earing ratio of a cup formed by a first drawing of the aluminum alloy sheet is 2.0% or less, and a value obtained by subtracting the 45° earing ratio from a 0-180° earing ratio of the cup formed by the first drawing of the aluminum alloy sheet is −1.0% or more and 2.0% or less.

What is claimed is: 
     
         1 . An aluminum alloy sheet comprising:
 0.05 to 0.60% by mass of Si;   0.05 to 0.40, or 0.60 to 0.80% by mass of Fe;   0.05 to 0.25% by mass of Cu;   0.80 to 1.50% by mass of Mn;   1.30 to 1.50% by mass of Mg;   Al; and   inevitable impurities,   wherein a 45° earing rate of a cup formed by a first drawing of the aluminum alloy sheet is 2.0% or less, and   wherein a value obtained by subtracting the 45° earing rate from a 0-180° earing rate of the cup formed by the first drawing of the aluminum alloy sheet is −1.0% or more and 2.0% or less.   
     
     
         2 . The aluminum alloy sheet according to  claim 1 ,
 wherein the aluminum alloy sheet has a formability sufficient to form a can having a can height and a can body formed of the aluminum alloy sheet by a DI-formation and a neck formation, wherein when the can height of the can body is measured along its entire circumference, a difference between a maximum value and a minimum value of the can height is 0.080 mm or smaller.   
     
     
         3 . The aluminum alloy sheet according to  claim 1 ,
 wherein the 45° earing rate of the cup formed by the first drawing of the aluminum alloy sheet is 0.8% or less.   
     
     
         4 . The aluminum alloy sheet according to  claim 3 ,
 wherein an ending temperature in hot finishing rolling is 450 to 550° C.   
     
     
         5 . The aluminum alloy sheet according to  claim 1 ,
 wherein the Fe content is 0.05 to 0.20, or 0.6 to 0.80% by mass.   
     
     
         6 . A DI-formed can body formed of the aluminum allow sheet according to  claim 1 .