Aluminum sheet with enhanced formability and an aluminum container made from aluminum sheet

Abstract

In some embodiments of present disclosure, a method includes: obtaining an aluminum sheet comprising a 3xxx or a 5xxx alloy having a tensile yield strength as measured in the longitudinal direction of 27-33 ksi and an ultimate tensile strength; wherein the ultimate tensile strength minus the tensile yield strength is less than 3.30 ksi (UTS−TYS<3.30 ksi); and forming a container having a dome from the aluminum sheet.

1 . A method comprising:
 obtaining an aluminum sheet comprising a 3xxx or a 5xxx ahoy; wherein the aluminum sheet has a tensile yield strength as measured in the longitudinal direction of 27-33 ksi and an ultimate tensile strength; wherein the ultimate tensile strength minus the tensile yield strength is less than 3.30 ksi (UTS−TYS<3.30 ksi); and wherein the aluminum sheet has a thickness of 0.006 inch to 0.030 inch;   drawing the aluminum sheet to form a drawn container;   ironing the drawn container to form a drawn and ironed container;   necking the drawn and ironed container to reduce a diameter of a portion of the drawn and ironed container to form a bottle;   expanding a section of the reduced diameter portion of the bottle; and   finishing the bottle by at least one of forming threads, expanding, narrowing, curling, or flanging, so as to result in the bottle configured to accept a closure.   
     
     
         2 . The method of  claim 1 , wherein the tensile yield strength as measured in the longitudinal direction is 28-32 ksi. 
     
     
         3 . The method of  claim 1 , wherein the tensile yield strength as measured in the longitudinal direction is 28.53-31.14 ksi. 
     
     
         4 . The method of  claim 1 , wherein the ultimate tensile strength minus the tensile yield strength is 2.90-3.30 ksi. 
     
     
         5 . The method of  claim 1 , wherein the ultimate tensile strength minus the tensile yield strength is 2.99-130 ksi. 
     
     
         6 . The method of  claim 1  wherein the aluminum sheet comprises one of AA: 3×03, 3×04 or 3×05. 
     
     
         7 . The method of  claim 1  wherein the aluminum sheet comprises AA 3104. 
     
     
         8 . The method of  claim 1 , wherein the section has a length and the length is at least 0.3 inches. 
     
     
         11 . The method of claim  10 , wherein the length is at least 0.4 inches. 
     
     
         12 . The method of  claim 1 , wherein the aluminum sheet is a 3xxx alloy.