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. Austenitic SS Sanrico 28 - shalinSanicro 28 which is an alternative name to the Incoloy 28 is a multipurpose stainless steel alloy are characterized by better corrosion resistance in various environments like those with strong acids and conditions that are stressful. Alloy 28 or sanrico28 has an entirely austenitic structure due to its very high nickel content. The alloy is sensitive to intermetallic phase precipitation when the heat is treated


Thrrmodyn has extensive experience in acid and sour gas environments, and in using materials with high mechanical characteristics, such as martensitic 16-4 stainless steels without ageing. This experience ins also used in the choice of an austenitic-ferritic stainless steel of the UNS S39550 type which is 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 Low-Temperature Nitrocarburizing of Austenitic Stainless Request PDF Low-Temperature Nitrocarburizing of Austenitic Stainless Steel for Combat Corrosion in H2S Environments The time-dependent experiment was performed to investigate the corrosion

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 Behavior of Low-temperature Liquid Low-temperature nitridation is a widely used surface heat treatment. Low-temperature liquid nitridation was applied to 316 austenitic stainless steel and an S-phase (expanded austenite) layer was achieved on the alloy surface. The effect of the S-phase layer on corrosion resistance and stress corrosion cracking was investigated in a sour environment. When a bending stress of 164 MPa (80 pct Stress corrosion cracking of sensitized austenitic Mar 23, 2010 · Purpose The purpose of this paper is to investigate stress corrosion cracking (SCC) for 304, 316, and 321 stainless steels in petroleumprocessing environments. Design/methodology/approach Sensitized austenitic stainless steels were subjected to a microstructure investigation and electrochemical test. Stressed sensitized 304, 316, and 321 stainless

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. Welding of Austenitic Stainless Steel - TWIThe 3XX may followed by a letter that gives more information about the specific alloy as shown in the Table. 'L' is for a low carbon austenitic stainless steel for use in an aggressive corrosive environment ; 'H' for a high carbon steel with improved high temperature strength for use in creep applications; 'N' for a nitrogen bearing steel where a higher tensile strength than a conventional

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 .