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This paper covers the Defense Specifications and Standards Program (DSSP). It describes the Department of Defense (DoD) standardization organization, discusses types of standardization documents, defines standardization terms, and covers requirements and test methods for hydrogen embrittlement in defense standardization documents. The DSSP is administered by the Deputy Under Secretary of Defense for Research and Engineering through the Defense Materials Specification and Standards Office (DMSSO). Authority is delegated by the DMSSO to Army, Navy, Air Force, and Defense Logistics Agency Departmental Standardization Offices (DEPSOs) for portions of the DSSP program. These DEPSOs further delegate responsibility among the forty plus standardization offices located at military installations. The Army Materials Technology Laboratory (AMTL) is one of these standardization offices.
The coverage of hydrogen embrittlement by DoD standardization documents is also discussed. The requirement section of specifications states the required hydrogen embrittlement relief treatment, and the quality assurance section describes the test methods to determine if embrittlement relief treatment has been successful.
DoD standardization, hydrogen embrittlement, stress corrosion, hardness, tensile strength, plating, hydrogen-stress cracking, brittle failure, atomic hydrogen, ferrous metals
Clegg, Edward T.
Chemist, Army Materials Technology Laboratory, Watertown, MA