AMPP Store - Products tagged with 'duplex stainless steel (dss)'

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A Recent Failure Case Studies on Duplex Stainless Steels in Refinery

Product Number: 51324-20707-SG

Author: D.S Lee; Y. Ro; S.Y Pae

Publication Date: 2024

$40.00

Duplex stainless steel (DSS) is widely used in the refinery because of its economical combination of strength, corrosion resistance and cost. Various forms of damage may occur to the DSS depending on the concentration of chloride, H2S, water, and temperature. This report presents the analysis results of failure cases occurring in various environments of the SK energy refinery. Operation condition and corrosion environment of each exchanger are described. Analysis results of the cause of damage, inspection method and the results are also explained. This report introduces some failure analysis cases occurred in various environments of the refinery, for example, chloride induced SCC (Cl-SCC) in CDU and SRP process, SSC (Sulfide Stress Crack) in the weldment of air cooler header box, and pitting corrosion in high temperature chloride environments. This study will clearly show the importance of a tube production quality of DSS and the limitation of DSS tube in terms of the surrounding environments such as temperature, Cl and/or H2S contents, and salt formation. Furthermore, the potential problem of a repair welding during manufacturing DSS header box will be presented. We think that the present case studies will help DSS end-users and manufactures improving the understanding of a safe application for DSS.

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After 30 Years Of Duplex Stainless Steel Experience In Oil & Gas - Do We Still Face Challenges?

Product Number: 51322-17690-SG

Author: Janardhan Rao Saithala, Amjad Kharusi, Mohammed Ghafri, Talal Nabhani Manish Kulkarni, Nasser Behlani,

Publication Date: 2022

$20.00

In recent decade, the applications of DSS have significantly increased in oil & gas industry, due to their attractive properties compared to austenitic grades with similar corrosion resistance. The DSS products exhibit a better resistance to pitting, stress corrosion cracking and higher mechanical properties compared to other austenitic stainless steel grades. The microstructure of these materials consists of approximately 50% austenite (γ) and 50% ferrite (α) phases, obtained by means of a solution heat treatment.

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Design Of Cathodic Protection System For Duplex Stainless-Steel Pipeline: Protection Criteria And Hydrogen Embrittlement Management

Product Number: 51322-18124-SG

Author: Ashraf Al Aasmi, Kathy Buckingham, Ziru Zhang, Timothy Bieri

Publication Date: 2022

$20.00

A life cycle cost assessment led to the selection of DSS for field gas gathering network composing of more than 200 miles of pipelines. Buried portions are provided with external coating. Furthermore, due to high chloride content in the soils, the external corrosion threat was mitigated through the use of an external coating supplemented with CP.

As there was no industrial reference covering onshore DSS pipeline CP criteria, lab testing was conducted to establish the criteria and confirm if the risk of hydrogen embrittlement is managed appropriately. This is further evaluated with field data to confirm pipelines integrity.

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Failure Analyses On A Super Duplex Stainless Steel Tube Material Before And After Slow Strain Rate Testing In Sour Conditions – Part 2: A Case Study On Local Corrosion

Product Number: 51322-18320-SG

Author: Wenle He, Raveendra Siriki, Jerry Lindkvist

Publication Date: 2022

$20.00

The investigation on the specimens in the SCC susceptible conditions is included in Part 1, AMPP conference paper C2022-17998². In this Part 2, a case study is presented on the local corrosion on specimen surface or shoulder area although high ductility ratios in two testing conditions.

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Failure Analysis On A Super Duplex Stainless Steel Tube Material Before And After Slow Strain Rate Testing In Sour Conditions - Part 1: SCC Susceptibility

Product Number: 51322-17998-SG

Author: Wenle He, Raveendra Siriki, Jerry Lindkvist

Publication Date: 2022

$20.00

Standards NACE(1) MR0175 / ISO⁽²⁾ 15156-3¹ have temperature-H₂S-Cl-pH limits for safely using duplex stainless steels based on their Pitting Resistance Equivalent Number (PREN) of subcategory such as duplex stainless steel (DSS, PREN 30-40, Mo>1.5%) and super duplex stainless steel (SDSS, PREN 4045), temperature-pH domain of stress corrosion cracking (SCC) resistance can be used for material evaluation and provided by using slow strain rate testing (SSRT) screening in sour testing conditions².

Products tagged with 'duplex stainless steel (dss)'

A Recent Failure Case Studies on Duplex Stainless Steels in Refinery

After 30 Years Of Duplex Stainless Steel Experience In Oil & Gas - Do We Still Face Challenges?

Design Of Cathodic Protection System For Duplex Stainless-Steel Pipeline: Protection Criteria And Hydrogen Embrittlement Management

Failure Analyses On A Super Duplex Stainless Steel Tube Material Before And After Slow Strain Rate Testing In Sour Conditions – Part 2: A Case Study On Local Corrosion

Failure Analysis On A Super Duplex Stainless Steel Tube Material Before And After Slow Strain Rate Testing In Sour Conditions - Part 1: SCC Susceptibility

Association for Materials Protection and Performance