Hydrogen Embrittlement Resistance for Steel Wire ASTM A1032

Hydrogen Embrittlement Resistance for Steel Wire ASTM A1032

ASTM A1032 test method determines the resistance of hard drawn steel wire used for the prestressed concrete pipe to hydrogen embrittlement that serves as time-to-failure of specimens being tested. The final results are to be expressed in SI units.

    Scope:

    ASTM A1032 test method establishes a standard for providing the pipes with long-term performance. The time passed by the stressed wire specimen in tolerating the heated solution of NH₄SCN without failure is its resistance to hydrogen-induced embrittlement. 

    Test Procedure:

    Prepare a test specimen by sealing the ends of the cell and placing it in a tensile force frame. After applying tensile force, the test cell is to be filled with a preheated solution of NH₄SCN. The temperature of the solution and the tensile strength should be by the force requirements. A chronometer should be used to record the time of failure.

    Specimen Size : 

    A specimen is cut from the wire test unit with a minimum length of 150 mm exposed to the test solution.

    Data:

    A test unit consists of 1500 mm (60 in.) of wire from a coil of wire and the solution is preheated to 50°C. All the data is expressed in SI units.

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