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AISI 420/410 Modified Martensitic Stainless Steel bar Stock Materials Sulphide Stress Cracking (SSC) Resistance in Mildly Sour Environments

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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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.

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
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$20.00
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UNSiii S41000 and UNS S42000 martensitic stainless steels bar stock alloys are often selected for downhole completion equipment due to their good performance in oil and gas environments. In accordance with the ISOiv 15156 / ANSIv NACEvi MR0175 Part 31 guidelines, UNS S41000 and UNS S42000 quenched and tempered to 22 HRC have a maximum ppH2S limit of 10 kPa (1.5 psi). For H2S levels exceeding 10 kPa (1.5 psi), the most common selection is precipitation hardened nickel alloys. Martensitic stainless steels are desirable as the lowest cost oil and gas corrosion resistant alloys and knowing their corrosion performance application windows for well construction materials is critical to their safe application. Similarly, it is possible that more stringent specification of these grades could extend their utility to more severe environments, decreasing reliance on PH-Ni alloys which are expensive and increase the lead time for equipment. 

UNSiii S41000 and UNS S42000 martensitic stainless steels bar stock alloys are often selected for downhole completion equipment due to their good performance in oil and gas environments. In accordance with the ISOiv 15156 / ANSIv NACEvi MR0175 Part 31 guidelines, UNS S41000 and UNS S42000 quenched and tempered to 22 HRC have a maximum ppH2S limit of 10 kPa (1.5 psi). For H2S levels exceeding 10 kPa (1.5 psi), the most common selection is precipitation hardened nickel alloys. Martensitic stainless steels are desirable as the lowest cost oil and gas corrosion resistant alloys and knowing their corrosion performance application windows for well construction materials is critical to their safe application. Similarly, it is possible that more stringent specification of these grades could extend their utility to more severe environments, decreasing reliance on PH-Ni alloys which are expensive and increase the lead time for equipment. 

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Picture for Optimizing Sour Gas Qualification Testing – Modeling the Effects of Temperature and Total Pressure on H2S Fugacity, Activity, and Solubility Coefficients
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Optimizing Sour Gas Qualification Testing – Modeling the Effects of Temperature and Total Pressure on H2S Fugacity, Activity, and Solubility Coefficients

Product Number: 51323-18762-SG
Author: Brent W.A. Sherar, Diana Miller, Hui Li
Publication Date: 2023
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Traditionally, sour severity of high-pressure, high temperature (HPHT) oil and gas production wells were assessed by H2S partial pressure (PH2S): The mole fraction of H2S in the gas (yH2S) multiplied by the total pressure (PT). While PH2S is appropriate for characterizing the sour severity of wellbores operating at low total pressures (e.g., PT < 35 MPa) and/or for highly sour systems (e.g., yH2S > 1 mol%), PH2S usually over-predicts the actual sour severity of HPHT systems, leading to sub-optimal material selection options. 
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
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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 The effect of reeling on the qualification of CRA lined and clad pipes according to NACE MR0175/ISO 15156-3: a methodology to qualify reeled pipelines
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The effect of reeling on the qualification of CRA lined and clad pipes according to NACE MR0175/ISO 15156-3: a methodology to qualify reeled pipelines

Product Number: 51323-18919-SG
Author: Riccardo Rizzo, Bjarte Lillebø, Stefan Marion, Erik Krogstad Sverre, Mads Arild Eidem, Karl Gunnar Solheim
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The use of carbon steel pipelines lined or clad with corrosion resistant alloys (CRAs) is increasing in the O&G industry. These pipelines combine the mechanical properties of carbon steel with the corrosion resistance of CRAs. Some CRAs such as AISI 316L (UNS 31603) are not pre-qualified according to ANSI/NACE MR0175/ISO 15156 part 3. The potential for corrosion and cracking of carbon steel in some applications can require a CRA liner/clad layer to resist corrosion but this can introduce the possible risk of stress corrosion cracking of some CRAs.
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