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51318-11084-The Application Limitation Boundary of Duplex Stainless Steel under Sour Condition in Oil Fields

Picture for The Application Limitation Boundary of Duplex Stainless Steel under Sour Condition in Oil Fields
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Pitting failure boundary of duplex stainless steel under sour condition was investigated by electrochemical and immersion tests. Polarization measurements investigate the effect of temperature and H2S on the corrosion behavior.

Product Number: 51318-11084-SG
Author: Ziru Zhang / Zhu Wang / Junpeng Xue / Lei Zhang / Xian Tang / Minxu Lu
Publication Date: 2018
Industry: Oil and Gas Production
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$20.00
$20.00

In this paper, the pitting failure boundary of duplex stainless steel under sour condition was investigated by electrochemical and immersion tests. Polarization measurements are employed to investigate the effect of temperature and H2Son the corrosion behavior of Duplex Stainless Steel. And the pitting susceptibility is estimated by the further analysis of polarization curves and surface characterization. The results show that the pitting resistance of S31803 duplex stainless steel decreases with the increase of temperature and the H2S partial pressure. S31803 duplex stainless steel is pitting sensitive at around 85oC in 50kPa H2S, 130,000ppm Cl- condition.

 

Key words: Stainless steel, Pitting, Polarization curve, H2S, Immersion test

In this paper, the pitting failure boundary of duplex stainless steel under sour condition was investigated by electrochemical and immersion tests. Polarization measurements are employed to investigate the effect of temperature and H2Son the corrosion behavior of Duplex Stainless Steel. And the pitting susceptibility is estimated by the further analysis of polarization curves and surface characterization. The results show that the pitting resistance of S31803 duplex stainless steel decreases with the increase of temperature and the H2S partial pressure. S31803 duplex stainless steel is pitting sensitive at around 85oC in 50kPa H2S, 130,000ppm Cl- condition.

 

Key words: Stainless steel, Pitting, Polarization curve, H2S, Immersion test

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51316-7325-Investigation of the Stress Corrosion Cracking Behavior of Duplex and Lean Duplex Stainless Steel Parent and Weldment Materials in Sour Service

Product Number: 51316-7325-SG
ISBN: 7325 2016 CP
Author: Chong Li
Publication Date: 2016
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Lean duplex stainless steel (LDSS) can provide mechanical properties similar to that of duplex stainless steel (DSS) and is less expensive. The focus of this work was to assess the stress corrosion cracking (SCC) and SCC susceptibility of DSS and LDSS in chloride-containing sour water conditions.

 
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51318-11022-Case Study: Solving the Puzzle of 10inch Duplex Stainless Steel Flowline Weld Failure

Product Number: 51318-11022-SG
Author: Mushaid Nauman, Mohammed Rashid
Publication Date: 2018
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This paper discusses the detailed inspection, testing, metallurgical analysis and supporting factors from which the most likely cause of pitting corrosion was revealed in the DSS flowline welds.

 
Picture for Influence of tungsten on passivity breakdown and repassivation of 25Cr super duplex stainless steels
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51318-11102-Influence of tungsten on passivity breakdown and repassivation of 25Cr super duplex stainless steels

Product Number: 51318-11102-SG
Author: Cristian Torres / Mariano Kappes / Roy Johnsen / Mariano Iannuzzi
Publication Date: 2018
$20.00

Two super duplex stainless steels were investigated: a W-free (UNS S32750) and a 2.1 wt% W-containing (UNS S39274) grade. Goals: To study localized corrosion resistance of super duplex stainless steels and how W affects the same.
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