Abstract

Seven trial heats that were quenched and tempered into the C-110 strength range were tested for sulfide-stress-corrosion cracking (SSCC) resistance with three popular test procedures: the NACE tension, the Shell bent-beam, and the double-cantilever-beam (DCB) methods. One of the heats, containing 0.45% C, 0.6% Mn, 1.0% Cr, 0.8% Mo, 0.04% Nb, 0.05% V, and 0.03% Ti, was tempered at temperatures above 1,292F (700C) and satisfied the requirements for C-110, where the NACE threshold stress was set at a minimum of 80% of its specified minimum yield strength (SMYS).

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