... tests. Alloying elements of interest for comparison, including those used in common PRE-values (pitting resistance equivalent), are listed in Table 2 . Table 2 Nominal chemical composition (w-%) of alloys tested (selected elements). UNS-No Fe Cr Mo Ni N W N08935 Bal. 27 6.5 35...

...-to-austenite balance through metallographic examination and corrosion performance by means of standard ASTM A - 923 methods. Conclusions were drawn on the optimum backing gas that is recommended for the fabrication of DSS piping systems. Welding Stainless steel Metallurgical failures Pitting Corrosives...

... to the obstruction of condensation on the steel rather than an influence on the local pH. Hanford carbon steel vapor phase corrosion pitting multi-electrode array concrete INTRODUCTION The Hanford site contains approximately 55 million gallons (2.08 x 10⁸ liters) of radioactive and chemically...

...UNS-S32750 U-bending duplex stainless steels pitting sulfide stress corrosion cracking SCC INTRODUCTION One of the key aspects that have helped position the use of duplex stainless steels in the refining industry is its demonstrated high resistance to chlorides stress corrosion cracking...

... corrosion at cracks and concave zones from printing. ^{3 , 11} A similar effect is reported in studies of the effect of porosity on corrosion properties of AM metals. Pores, with a concave and closed geometry, can promote electrolyte stagnation leading to pit initiation and challenging pit re...

... . These simulants were developed to evaluate the effects of chloride only, chloride and nitrate, and chloride, nitrate and sulfate, on localized corrosion of the 304H and 316L SS. Oxyanions including nitrate, nitrite, and sulfate are known to inhibit pitting in stainless steels. The ETF wastes contain a relatively...

... caliper that developed severe corrosion pittings during Neutral Salt Spray (NSS) test. Notably, this combined multi-techniques experimental approach can be easily applied to an extremely wide range of different mechanical parts and materials undergoing corrosion studies. EXPERIMENTAL PROCEDURE...

... installation of a potable water system in a Gulf Coast petrochemical facility. Lessons will cover materials specifications, post fabrication cleanup, and prevention of MIC. Microbiologically Influenced Corrosion Pitting Stainless Steel Heat Tint Bacteria Biofilm Failure Analysis SRB INTRODUCTION...

...Figure 3 shows the cyclic polarization curves obtained for DSS 2205 in 3.5% NaCl and 3.5% NaCl + 0.02 M Na₂S₂O₃ solutions. DSS 2205 did not exhibit a well-defined breakdown potential indicating that the alloy is less susceptible to the initiation of pitting...

... the aforementioned electrochemical techniques, along with electrochemical noise and cyclic voltammetry, we probe and monitor localized corrosion and general corrosion of X65 steel in the presence of inorganic pitting agents. Experiments are conducted in both aqueous and nonaqueous environments. The additional...

... for the purpose of analytical TEM characterization. Initial imaging of the notch of Alloy 800 tensile specimens revealed a combination of environmentally-assisted cracking (EAC), intergranular corrosion (IGC), and pitting corrosion occurring up to approximately 50 μm in depth. Energy dispersive x-ray spectroscopy...

... for application via umbilical and downhole capillaries. carbon steel corrosion inhibitor sweet sour carbon dioxide hydrogen sulphide localized corrosion pitting INTRODUCTION There are a range of materials available for oil and gas pipeline systems and downhole tubulars but, if it meets the necessary...

...Abstract Several warm-worked Cr-Mn-N austenitic stainless steels with 110 to 135ksi (758-931 MPa) yield strength and a wide range of Cr, Mn, and N were evaluated for pitting and crevice corrosion in both as-received condition and in a post-polymer thermal cure condition aimed to assess...

...cost effective material HPHT wells high strength grade supermartensitic S13Cr Duplex Stress Corrosion cracking sulfide stress cracking pitting cyclic polarization INTRODUCTION The combination of targeted performances of the new alloy: - 110 or 125ksi High Yield strengths - higher...

... in environments that contain H₂S, particularly in relation to the susceptibility to sulfide stress corrosion cracking (SSC) assisted by H₂S. The objective of the study is to evaluate the effects of temperature, H₂S, and Cl^- concentration on the pitting onset of pitting...

...Passive layers on stainless steels (with at least 13% Cr) as well the modified MSS, contain chrome oxides as found by different authors, by the nature of this passive layers the Cl^- content within the brine as well the temperature should have an effect in their pitting resistance [ 17...

.... Pitting, crevice and stress corrosion cracking (SCC) and sulphide stress corrosion cracking (SSC) tests were conducted on both parent material and representative welds in high ppH₂S and in high chloride environments using four-point bend test method (FPBT). The results established the new...

... is near the background current collected with this setup since no pitting corrosion or any other type of corrosion was observed below this temperature. The top right image shows the graph of the temperature versus time. The bottom right image of Figure 5 shows the potential, current and temperature...

... the installation of a novel automatic flushing system. corrosion pipeline MIC solids 4-phase flow pitting stagnant water stationary bed corrosion prevention unpiggable map INTRODUCTION A large number of onshore and offshore facilities are approaching or have exceeded their original design life. Many...

...DISCUSSION Alloy 35Mo has very good pitting resistance demonstrated by a CPT above 100°C in 3 M MgCl₂, a result earlier only found for 7Mo grades and about 35°C higher than for a 6Mo grade. ² This strongly indicates that Alloy 35Mo is a very promising grade for service...