AMPP Store - Products tagged with 'duplex'

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51316-7036-Abrasion-Corrosion Resistance of Stainless and Wear Resistant Steels for Oil Sands Applications

Product Number: 51316-7036-SG

ISBN: 7036 2016 CP

Author: Sandra Le Manchet

Publication Date: 2016

$20.00

Oil sands operations may give rise to various corrosion risks such as pitting corrosion crevice corrosion microbiologically induced corrosion and abrasion-corrosion. This paper focuses on the abrasion-corrosion resistance of various stainless steels and wear resistant carbon steels.

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51316-7109-Marine Crevice Corrosion Of Stainless Steel Alloys Under Biofilmed And Sterile Conditions

Product Number: 51316-7109-SG

ISBN: 7109 2016 CP

Author: James Stott

Publication Date: 2016

$20.00

As part of a project to develop a database of seawater corrosion resistance including resistance to microbiologically-influenced corrosion (MIC) seawater, MIC exposure tests of five stainless steel alloys were undertaken for three and six month durations.

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51318-10876-MEANINGFUL TESTS FOR THE QUALITY OF DUPLEX STAINLESS STEELS

Product Number: 51318-10876-SG

Author: Dr. Glenn Byrne / A Fajimi / Dr. R Francis / G. Warburton

Publication Date: 2018

$20.00

Current test regimes and acceptance levels as concerns the strong detrimental influence on toughness and corrosion resistance of intermetallic particles (IMP) in the microstructure of duplex stainless steels.

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Effect of Pre-pits on Localized Corrosion and Sulfide Stress Cracking Resistance of Duplex Stainless Steel UNS S32205 in Upstream Production Environments

Product Number: 51324-21031-SG

Author: Guru Prasad Sundararajan; V.T. Aruna; Marc E. Wilms; Navashree Surendran

Publication Date: 2024

$40.00

Components in upstream Oil and Gas production such as flowlines, storage vessels or injector pipelines which are made of duplex stainless steel UNS S32205 can undergo localized corrosion such as pitting or crevice corrosion when exposed to oxygen during shutdowns or turn arounds. Such unintended exposure to oxygen is related to poor maintenance or improper preservation and would normally require replacement of equipment. Further use of such pitted components can be considered but requires re-assessment of the pre-corroded material. Open-circuit Potential (OCP) and repassivation potentials (Erp) were measured on UNS S32205 in simulated flowline brines containing 150,000 mg/L Cl- at 110oC with pCO2 of 4.1 bara. The effect of pre-pits on bare and girth welded UNS S32205 was determined by creating artificial pits at OCP under oxygenated brine conditions and then switching the gaseous environment to sweet (CO2) conditions with continuous OCP monitoring. It was found that in oxygen-free CO2 production environments, existing pits did not grow. Sulfide Stress Cracking (SSC) resistance of pre-pitted solution annealed UNS S32205 specimens was determined through Slow Strain Rate Testing (SSRT) and Ripple Load Testing (RLT) at 90oC in concentrated chloride solutions. An electrochemical method was applied to create a single pit on the gauge surface. Comparison of SSRT and RLT results showed that SSRT is too aggressive for determining the pH2S limits. RLT of both pristine and pre-pitted UNS S32205 in concentrated chlorides with up to 0.3 bara pH2S did not show rupture, while selective attack of the ferrite phase was found (pit-depth < 30µm). RLT of notched UNS S32205 specimens were compared to that of pre-pitted specimens. Implications of these results on the limits recommended in ISO15156 / NACE MR0175 are discussed.

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Preparing Hot-Dip Galvanized Coating Surfaces for Painting

Product Number: 41215-908-SG

Author: Thomas J. Langill

Publication Date: 2015

$20.00

Duplex systems, also known as painting over hot dip galvanized steel, are extremely effective corrosion protection systems. However, careful surface preparation techniques need to be used to alleviate potential coating failures. The age and characteristics of the galvanized coating should be used to determine what type of surface preparation is needed. Surface preparation should develop an anchor profile for the paint without removing the zinc coating.

Products tagged with 'duplex'

51316-7036-Abrasion-Corrosion Resistance of Stainless and Wear Resistant Steels for Oil Sands Applications

51316-7109-Marine Crevice Corrosion Of Stainless Steel Alloys Under Biofilmed And Sterile Conditions

51318-10876-MEANINGFUL TESTS FOR THE QUALITY OF DUPLEX STAINLESS STEELS

Effect of Pre-pits on Localized Corrosion and Sulfide Stress Cracking Resistance of Duplex Stainless Steel UNS S32205 in Upstream Production Environments

Preparing Hot-Dip Galvanized Coating Surfaces for Painting

Association for Materials Protection and Performance