STP665

    Multispecimen Test Facility for High Temperature, High Pressure Slow Strain-Rate Testing

    Published: Jan 1979


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    Abstract

    This paper describes a slow strain-rate test facility in which 6 tension specimens may be tested simultaneously and load-versus-displacement curves for each specimen may be recorded. The facility is designed to operate at a maximum temperature of 500 K (450 °F) and a maximum pressure of 28 MPa (4 ksi). Constant crosshead displacement rates ranging from 2.5 × 10-6 to 2.5 × 101 cm/s (10-6 to 101 in./s) may be obtained. Studies of hydrogen sulfide (H2S)-induced stress corrosion cracking (SCC) of low alloy steels exposed to simulated sour gas well environments (hydrogen sulfide-carbon dioxide-water (H2S-CO2-H2O)) are described. Use of the technique to determine H2S-induced SCC susceptibility of various steels as a function of temperature is shown.

    Keywords:

    stress corrosion cracking, strain rate, high temperature tests, high pressure tests, multispecimen test facility, low alloy steels, sour gas well environments, temperature


    Author Information:

    Lyle, FF
    Senior corrosion engineer and manager of mechanical properties section, Southwest Research Institute, San Antonio, Tex.

    Norris, EB
    Senior corrosion engineer and manager of mechanical properties section, Southwest Research Institute, San Antonio, Tex.


    Paper ID: STP38129S

    Committee/Subcommittee: G01.12

    DOI: 10.1520/STP38129S


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