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Document Designation and Title Year Select Item(s) B646 Standard Practice for Fracture Toughness Testing of Aluminum Alloys 06a B646 Standard Practice for Fracture Toughness Testing of Aluminum Alloys 06 B646 Standard Practice for Fracture Toughness Testing of Aluminum Alloys 04 B646 Standard Practice for Fracture Toughness Testing of Aluminum Alloys 03 B646 Standard Practice for Fracture Toughness Testing of Aluminum Alloys 97