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Document Designation and Title Year Select Item(s) A255 Standard Test Methods for Determining Hardenability of Steel 07e1 A255 Standard Test Methods for Determining Hardenability of Steel 07 A255 Standard Test Methods for Determining Hardenability of Steel 02e1 A255 Standard Test Method for Determining Hardenability of Steel 02 A255 Standard Test Method for Determining Hardenability of Steel 99