Some Aspects of the Stress Corrosion Testing of Austenitic, Martensitic, Ferritic-Austenitic and Ferritic Types of Stainless Steel by Means of the Slow Strain-Rate Method

    Published: Jan 1979

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    The stress corrosion cracking (SCC) susceptibility of six different types of stainless steel (AISI 304, 316 and 431, and Uranus 50, Orion 26-1, and Orion 28-2 from Creusot Loire) was tested in concentrated magnesium chloride (MgCl2) solutions by means of the slow strain-rate (SSR) method. The effects of strain rate, chloride concentration, testing temperature, electrode potential of the specimen, and the presence of inhibitors have been investigated. Test results are compared with literature data. The ferritic steel Orion 26-1, expected to be immune to SCC, was found to show some susceptibility in SSR tests. In the present SSR tests, some inhibitors were found to be completely effective in preventing SCC in MgCl2 solutions in concentrations considerably lower than reported in the literature for constant strain-type testing conditions.


    stress corrosion cracking, stress corrosion testing, stainless steels, slow strain-rate method, evaluation

    Author Information:

    Mom, AJA
    National Lucht-en Ruimtevaartlaboratorium, Emmeloord,

    Dencher, RT
    Delft University of Technology, Laboratory of Metallurgy, Delft,

    Wekken, CJ v d
    Delft University of Technology, Laboratory of Metallurgy, Delft,

    Schultze, WA
    Delft University of Technology, Laboratory of Metallurgy, Delft,

    Paper ID: STP38123S

    Committee/Subcommittee: G01.06

    DOI: 10.1520/STP38123S

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