SURFACE-TREATED STEEL SHEET FOR USE AS BATTERY CASING, BATTERY CASING, AND BATTERY

摘要

A surface treated steel sheet for a battery container (100) which is obtained by plating a steel sheet (10) with an iron-nickel alloy and then subjecting the sheet to heat treatment, wherein the outermost surface layer is an iron-nickel alloy layer (20) 20) of the present invention has an average crystal grain size at the outermost surface of 1 to 8 占 퐉. According to the present invention, there can be provided a surface-treated steel sheet for a battery container, which is capable of suppressing elution of iron in the inside of the battery when used as a battery container and capable of extending the life of the battery and having improved battery characteristics such as discharge characteristics, It is possible to provide a battery container and a battery obtained by using a surface treated steel sheet for a battery container.