Criteria for Accelerated Estimation of Susceptibility of Pipe Steels to Corrosion Cracking Under Oilfield Conditions

Recommendations are developed for selection of criteria for estimation of the susceptibility of steels to corrosion cracking in accelerated tests. The fracture behavior of pipe steels under different loading rates and temperatures is studied experimentally in environments containing hydrogen sulfide and carbon dioxide. Depending on the yield strength of the steel, such criteria are shown to be the breaking stress or the ratio of the failure stresses in the corrosive environment and in air as well as the elongation or the ratio of the elongations in the environment and in air.