Metal end shell and easy opening can end for beer and beverage cans

The present invention relates to improved metal end shells for use in producing easy opening ends for beer and beverage cans. An end shell of this invention has an improved profile that facilitates metal savings while maintaining commercial requirements for buckle resistance of the manufactured easy opening ends as packed on pressurized cans. This invention facilitates use of aluminum sheet material having average longitudinal yield strengths of about 53.5 ksi in the manufacture of the end shells and easy opening ends and therefore facilitates the use of thinner gauge metal. A sheet metal end shell for conversion into easy opening beer and beverage ends with reduced metal usage while maintaining commercially acceptable buckle resistance. The end shell has an upper chuckwall portion that is disposed at an angle of about 20-35 degrees to vertical, a countersink bead having a width of about 0.020-0.040 inch, and further preferably having a countersink depth of less than about 0.250 inch and a panel depth less than about 0.070 inch.