austenitic stainless wet sour environment

Addressing the sour gas challenge - DigitalRefining

In practice, operators experience most risk of environmentally induced cracking of austenitic and duplex stainless steels due to H2S and chlorides at intermediate temperatures, approximately in the range 80-100°C. Indirect effects of CO2 As the other main acidic compound in sour gas, it is also worth considering the impact of CO2. Effect of elemental sulfur on corrosion in sour gas Apr 01, 1991 · @article{osti_7117738, title = {Effect of elemental sulfur on corrosion in sour gas systems}, author = {Schmitt, G}, abstractNote = {In this paper, the corrosive interaction of wet elemental sulfur with construction materials is reviewed, emphasizing effects of alloy composition (carbon steels, ferritic steels, austenitic steels; ferritic-austenitic (duplex) steels, Ni- and Co-based alloys

In-Service Stress Corrosion Cracking of 316L Stainless Steel

Mar 26, 2021 · In its first publication in 2003, the limit of AISI 316L stainless steel is 60°C (140°F) maximum when chlorides exceed 50 ppm. After conducting laboratory testing, researchers argued that the limitation for austenitic stainless steels can be expanded to a more severe environment than the original ISO 15156 restrictions. In 2007, the Product Bulletin High Alloy Stainless Steels September fully austenitic. Superaustenitic SST's have the same structure as the common 300 series alloys, but have higher levels of elements such as chromium, nickel, molybdenum, copper and nitrogen. High alloy SST's are often used where chlorides or sour gas are encountered. Industries include pulp and paper, chemical, oil and gas, power, desalination, and marine. Role of alloyed copper on corrosion resistance of Apr 01, 2014 · Abstract. Corrosion test, surface analysis and thermodynamic calculation were carried out in the H 2 SCl environments to clarify the role of alloyed Cu on the corrosion resistance of austenitic alloys. The alloyed Cu improved pitting corrosion resistance in the H 2 SCl environment. The surface film of Cu-containing alloy indicated double layer consists of copper sulfide and chromium oxide, and

Selection guidelines for corrosion - Stainless Steel World

316 (Austenitic Stainless Steel) Alloy 316 (Figure 2) or more commonly Type 316 stainless steel is frequently used for oilfield applications in the complete absence of oxygen. In deaerated environments the limiting factors are H 2S and chloride. As also explained in Stress Corrosion Cracking Behavior of Materials IntechOpenMay 06, 2020 · Stress corrosion cracking is a phenomenon associated with a combination of tensile stress, corrosive environment and, in some cases, a metallurgical condition that causes the component to premature failures. The fractures are often sudden and catastrophic, which may occur after a short period of design life and a stress level much lower than the yield stress. The corrosion of duplex stainless steels in sour service Dec 31, 1994 · Abstract. The high resistance to corrosion of 22 Cr, 25 Cr and super duplex stainless steels in chloride containing environments is well known. In sour service, resistance to stress corrosion cracking, pitting and crevice corrosion in the presence of CO {sub 2} and H {sub 2}S is required. This paper presents the results of tests to determine the resistance of three duplex stainless steels to

The effect of sensitization treatment on chloride induced

Jan 01, 2020 · Heat treatment temperature between 550 °C650 °C followed by cooling process causes the sensitization of austenitic type stainless steel in which a chromium-depleted band is formed adjacent to the grain boundary. In this study, the impact of sensitization on CI-SCC was examined using austenitic stainless steel grade 304L (SS 304L). UNS S32760 Super Duplex Stainless Steel for Wet FGD Duplex stainless steels have been used extensively for wet flue gas desulfurization systems due to their high strength and good resistance to high chloride environments. Duplex stainless steels have inherently lower nickel content than their austenitic counterparts, and therefore, offer lower and more stable raw material prices. the resistance to pitting corrosion and PREN Mn a Ni othan conventional duplex stainless steel in sour environment. Furthermore, we suggested the PREN Ni to reflect the effect of Ni and Mn on the general corrosion rate of stainless steel in sour environment. Type 304L stainless steel was found to be susceptible to SSCC in all test environments.

Sour Service Limits of Dual-Certified 316/316L Steel - TWI

Welded pipes, pipework and components made from the Type 316/316L grade of austenitic stainless steel are widely used in the oil and gas industry to handle sour fluids (i.e. containing H 2 S). This material is susceptible to stress corrosion cracking in sour brines, and thus the use of this material is restricted according to the limits detailed in ISO 15156/NACE MR0175, which are detailed in Table 1 .