Structure and Properties of Steel for Producing Hydrogen Sulfide Resistant Oil and Gas High Strength Pipes

Oil and gas production casing and compression pipes used for structures in oil and gas deposit structures contaminated with a high concentration of hydrogen sulfide should have alongside high strength and cold resistance good sulfide stress corrosion cracking resistance. Medium carbon steels alloyed with chromium and molybdenum are used extensively for such products. After quenching and tempering in the temperature range 680-720oC these steels possess increased yield and tensile strengths along with good ductility. Alloying with molybdenum and vanadium provides a marked increase in sulfide stress corrosion cracking resistance with an increase in tempering temperature in the range indicated.