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| Test Solution C Test Solution C is a buffered aqueous brine solution with a chloride content, H2S partial pressure, and pH specified by the user of purchaser to simulate the intended service environment. Test Solution C shall consist of distilled or deionized water containing 0.4 g/L sodium acetate (5mM CH3COONa) and chloride (added as NaCl) at the same concentration as the intended service environment. Test Solution C is intended for use with martensitic stainless steels.Test SolutionB Test Solution B is an acidified and buffered, H2S-saturated aqueous brine solution. Test Solution B shall consist of 5.0 wt% sodium chloride, 2.5 wt% glacial acetic acid, and 0.41 wt% sodium acetate dissolved in distilled or deionized water (e.g., 50.0 g of NaCl, 25 g of CH3COOH, and 4.1 g of CH3COONa dissolved in 921 g of distilled or deionized water). Test Solution B is intended for use with carbon and low-alloy steels. Test Solution A Test Solution A is an acidified and buffered, H2S-saturated aqueous brine solution. Test Solution A shall consist of 5.0 wt% sodium chloride and 0.5 wt% glacial acetic acid dissolved in distilled or deionized water (e.g., 50.0 g of NaCl and 5.0 g of CH3COOH dissolved in 945 g of distilled or deionized water). Test Solution for Method B The test solution shall consist of 0.5 wt% glacial Acetic acid dissolved in distilled or deionized water. (e.g., 5.0 g of CH3COOH dissolved in 995 g of distilled or deionized water). NaCl shall not be added to the test solution.Method D - Standard Double-Cantilever-Beam (DCB) Test The average Klssc (threshold stress intensity factor for SSC) for valid tests of replicate test specimensMethod C - Standard C-Ring Test The highest no-failure stress in 720 hoursMethod B - Standard Bent-Beam Test The Statisically based critical stress factor (Sc) for a 50% probability of failure in 720 hours.Method A - Standard Tensile Test The highest no-failure stress in 720 hours. NACE TM0177 SULFIDE STRESS CRACKING AND STRESS CORROSION CRACKING IN H2S ENVIRONMENTS PROOF RINGS H2S HYDROGEN SULPHIDE TENSILE MACHINE TAFT TN CORROSION TESTING SERVICES TAFT TENNESSEE FAYETTEVILLE TENNESSEE TN ASTM |
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