Sulphide stress cracking test for steel. Except as identified in the following, testing shall be conducted in accordance with Method A-XXXX Standard Tensile Test procedures, as described in XXXX Standard TM0177-96. Tests shall be conduced on a minimum of three tensile specimens with a gauge diameter of 3.81 mm (0.150 inches) machined from the wall of a finished cylinder or liner. The specimens shall be placed under a constant tensile load equal to 60 per cent of the specified minimum yield strength of the steel, immersed in a solution of distilled water buffered with 0.5 per cent (mass fraction) sodium acetate trihydrate and adjusted to an initial pH of 4.0, using acetic acid. The solution shall be continuously saturated at room temperature and pressure with 0.414 kPa (0.06 psia) hydrogen sulphide (balance nitrogen). The tested specimens shall not fail within a test duration of 144 hours.
