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Picture for Sulfide Stress Cracking (SSC) Resistance of AISI 420 Modified (13Cr) Martensitic Stainless Steel Bar
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51317--9645-Sulfide Stress Cracking (SSC) Resistance of AISI 420 Modified (13Cr) Martensitic Stainless Steel Bar

Product Number: 51317--9645-SG
ISBN: 9645 2017 CP
Author: Karthik Krishnan
Publication Date: 2017
$20.00

This paper discusses a study wherein the SSC resistance of 13Cr bar stock quenched and tempered to 22 HRC maximum hardness was tested and evaluated beyond the maximum H2S limit of 10 kPa (1.5 psi) established in NACE MR0175/ISO 15156-3 for use in sour service.

 
Picture for Super Martensitic Stainless Steel UNS41426 Bar Manufactured to Optimize Sour Service Performance
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51318-11123-Super Martensitic Stainless Steel UNS41426 Bar Manufactured to Optimize Sour Service Performance

Product Number: 51318-11123-SG
Author: Lee Smith / Chertsey Road / Lucrezia Scoppio / Perry Nice / Giuseppe Mortali / Daisuke Matsuo / Takuji Nakahata / Hisashi Amaya
Publication Date: 2018
$20.00

To explore if the sour service performance gap between SMSS tubular and bar stock could be overcome, work was conducted to optimize the performance of 110ksi specified minimum yield strength UNS(1) S41426 bar product.
Picture for AISI 420/410 Modified Martensitic Stainless Steel bar Stock Materials Sulphide Stress Cracking (SSC) Resistance in Mildly Sour Environments
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AISI 420/410 Modified Martensitic Stainless Steel bar Stock Materials Sulphide Stress Cracking (SSC) Resistance in Mildly Sour Environments

Product Number: 51323-18759-SG
Author: Roberto Morana, Lee Smith, Perry Nice, Lucrezia Scoppio, Marc Müller, Karola Klenke, Roberta Prencipe, Luciana Intiso
Publication Date: 2023
$20.00

Martensitic Stainless Steel (SMSS) is widely used for downhole production tubing and liners in the Oil & Gas industry. Optimization of the tubular material chemistry, cleanliness and manufacturing route has delivered useful performance in H2S-containing environments (specifically SSC and stress corrosion cracking [SCC])3 resistance4,5,6. Some tubular accessories and most completion equipment require sizes not readily delivered by tubular product form. In these instances, bar stock material is a pragmatic choice.
Picture for Domain Diagrams for the Sulfide Stress Cracking Resistance of High Strength Low Alloy steel 41xx Bar Stocks
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Domain Diagrams for the Sulfide Stress Cracking Resistance of High Strength Low Alloy steel 41xx Bar Stocks

Product Number: 51320-14590-SG
Author: Vipul Shinde, Manuel Marya
Publication Date: 2020
$20.00

High-strength low-alloy steel bar stocks with 110ksi (758MPa) and 125ksi (862MPa) specified minimum yield strength (SMYS) are in demand for temporary and permanent downhole tools for sour service. NACE MR0175/ISO15156 currently allows the use of low-alloy steel bar stocks without any environmental restrictions up to 22HRC, which, by most specifications, corresponds to 80ksi (552MPa) SMYS. At higher SMYS, and with exclusions of API and proprietary sour tubular grades, NACE MR0175/ISO15156 does not address solid bar stocks, a gap and opportunity addressed by this investigation. Specifically, in this paper, the sulfide-stress cracking (SSC) of commercial UNS G41xxx (41xx) alloys, including 41xxMod (i.e., carefully selected or mill modified) is investigated following a series of NACE TM0177 Method A tests in either Solution B or A (NACE Region 3). Domain diagrams for 41xx alloys are disclosed, all demonstrating that 41xx solid bar stocks are SSC resistant above 150°F (66°C) when under a new and improved specification. When SMYS is raised to 125ksi (862MPa) with 34HRC max, a safe minimum temperature of 175°F (79.5°C) is confirmed for hollow bars, well in line with current NACE MR0175/ISO15156. The metallurgical and hardness requirements of 41xx alloys are also briefly discussed, along with opportunities for further modifications of 41xx bar stocks. 
Picture for Rethinking Sulfide Stress Cracking (SSC) Resistance Super Martensitic Stainless Steel (SMSS-13Cr) Bar Stock With 95 Ksi MY
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Rethinking Sulfide Stress Cracking (SSC) Resistance Super Martensitic Stainless Steel (SMSS-13Cr) Bar Stock With 95 Ksi MY

Product Number: 51322-17614-SG
Author: Karthik Krishnan, Chad Glaesman
Publication Date: 2022
$20.00

13Cr-5Ni-2Mo type Super Martensitic stainless steels referred to as SMSS-13Cr type grades can provide good general corrosion resistance such as in high CO2 environments combined with higher strengths and excellent toughness2 making them a prospective material choice for long term downhole completion equipment depending on actual well conditions. One of the main limiting factors for the use of SMSS-13Cr type grades is the Sulfide Stress Cracking (SSC) resistance in presence of H2S in downhole well conditions. Therefore, a good understanding of this behavior is essential to facilitate the material selection process. 
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