... Technology/Tube 8618 W. Little York Rd, Suite 100 Houston TX 77040 United States Per Olsson- Artberger Sandvik Materials Technology/Tube Stensmo, STO Sandviken, SE81181 Sweden ABSTRACT Pitting corrosion resistance by critical pitting temperature (CPT) has been determined per ASTM G150 on the full-size...

... ABSTRACT Alloy 718 (UNS* N07718) is a precipitation hardenable material extensively used in upstream applications due to the beneficial combination of high strength and excellent corrosion resistance. The Critical Pitting Temperature (CPT) of UNS N07718 determined according ASTM † G48 Method...

... Iversen Sandvik Materials Technology R&D, Corrosion Research, 4371 SE-811 61 Sandviken Sweden ABSTRACT Localized corrosion, such as pitting and crevice corrosion, is one of the most common reasons to failure in stainless steels. The standard method ASTM G150 measures the critical pitting temperature (CPT...

... temperature (CPT) of the various metallurgical stages was determined by monitoring open circuit potentials during immersion in 6 wt% ferric chloride (FeCl 3 ). Materials performance maps (MPM) were developed by combining TTT diagrams with CPT. Given that MPM provide information about phase transformation...

... on the two forms of corrosion and its relation to localized corrosion mechanisms are discussed. Differences between pitting corrosion and crevice corrosion are discussed. Most notably, the CCT of N06625 was the same as that of N08367 (6Mo) although the CPT of N06625 was at least 25 °C greater than...

... ABSTRACT This paper describes a novel methodology to measure the Critical Pitting Temperature (CPT) of a Duplex Stainless Steels (DSS) in artificial seawater based on the Electrochemical Noise (ECN) technique. The work presented here shows, for the first time, simultaneous in-situ micro...

... Abstract The effect of chemistry and heat treatment on pitting corrosion resistance of three cast duplex stainless steels was examined through mass loss, pitting density, and critical pitting temperature (CPT). Three chemistries were selected for testing: UNS J92205 (baseline) and a lower...

... produced and commercially available. Pipeline Corrosion flowline corrosion oilfield chemistry Corrosion Inhibition well integrity materials and corrosion riser corrosion metals & mining Production Chemistry Subsurface Corrosion strength CPT application Houston deformation H2S...

... was determined in acidified 10%w/v NaCl solution at 25°C, using potentiodynamic polarisation curve measurements. Critical pitting temperatures (CPTs) and critical crevice temperatures (CCTs) were determined using standard test methods: ASTM G150 (CPT) and ASTM G48 Methods C (CPT) and D (CCT). Pitting and crevice...

... Abstract This paper demonstrates a novel methodology that can be used to determine the factors that contribute to the initiation of pitting corrosion of Corrosion Resistant Alloys (CRAs) in aggressive environments above the Critical Pitting Temperature (CPT). The work presented here shows...

... chemistry well integrity cro 4 titanium manuscript stainless steel alloy oxygen-containing anion CPT Corrosion Science aggressive environment permission electrochemical society NaCl solution The pitting corrosion of titanium in aggressive environments: a review Jing Liu University...

... management flowline corrosion oilfield chemistry well integrity Corrosion Management Corrosion Inhibition materials and corrosion riser corrosion resistance austenitic stainless steel super duplex stainless steel texas 77084 alloy manuscript SDSs CPT crevice corrosion crevice corrosion...

... observed in the transpassive region, which has been also reported by many authors. 3 Critical Pitting Temperature (CPT) measurements revealed that CPT of alloy UNS N07750 in seawater lies between 11 and 20 0 C. During potentiodynamic polarization measurements, ennoblement in corrosion potential...

... at various temperatures, ranging from 20 to 90 0 C, to determine the effect of deleterious phases on critical pitting and crevice temperatures (CPT and CCT, respectively). CPP results were compared with reported values based on ASTM G48 method D, ASTM G150, and zero resistance amperometry. pipeline...

... corrosion well integrity corrosion rate test method flowline corrosion subsurface corrosion resistance test solution stainless steel specimen permission materials and corrosion test specimen government work cpt duplex grade deformation martensite content corrosion resistance duplex...

... solutions). Electrochemical tests done on the alloy also showed that pitting corrosion resistance was also dependent on the heat treatment temperature. materials and corrosion calculation cpt dss pren ferrite phase well integrity pipeline corrosion ferrite austenite corrosion inhibition...

... the alloy at a higher temperature) resulted in a lower Critical Pitting Temperature (CPT) of the alloy. Re-annealing the material to increase the grain size of the austenite resulted in an increased CPT. Microscopy on the inclusions before electrochemical measurements showed that the precursor sites...

... include ASTM G150 for Critical Pitting Temperature (CPT) determination as well as simpler approaches for measuring the resistance against localized corrosion quickly. The preliminary results of the ongoing study are promising. Distinguishing between sensitized and non-sensitized duplex steel was obtained...

... metals & mining riser corrosion Publication Division specimen materials and corrosion Pipeline Corrosion well integrity heating process texas 77084 CPT flowline corrosion manuscript potential noise record stainless steel permission fecl 3 potentiostatic test South Creek...

... electrochemical tests were run in order to find a correlation with actual operating conditions. Critical Pitting Temperature (CPT) of about 85 C and 76°C were obtained for SS304 in presence of Inhibitor A and Inhibitor B, respectively. CPTs greater than 80°C were reported for SS316L, SS317L, and SDSS2507...