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51318-10956-Effect of production routes on SSC of 110 ksi 13Cr Super Martensitic Stainless Steel (SMSS)

13Cr Super Martensitic Stainless Steel (SMSS) is commonly used in the Oil & Gas industry. The present work has been aimed at evaluating the influence of different heat treatment processes on the corrosion resistance of 110 ksi 13Cr SMSS.

Product Number: 51318-10956-SG
Author: Karola Klenke / Christoph Bosch / Marc André Müller / Michael Müller / Frank Hippenstiel1)
Publication Date: 2018
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13Cr Super Martensitic Stainless Steel (SMSS) with a specified minimum yield (SMYS) of 110 ksi is commonly used in the Oil & Gas industry.

The present work has been aimed at evaluating the influence of different heat treatment processes on the corrosion resistance of 110 ksi 13Cr SMSS. Bars were produced with a conventional QT process in gas fired batch furnaces as well as on an integrated forging line with inductive re-heating and direct quenching. The bars were tested according to NACE TM0177 Method A to prove the resistance to SSC. Tests were performed in several environments with different Chloride concentrations, pH levels and H2S partial pressures from 0.01 up to 0.05 bar. First results confirm the potential of new production concepts for SMSS steel bar products.

Key words: 13Cr Super Martensitic Stainless Steel, SSC, heat treatment, corrosion resistance, H2S, Forged Bar, Super 13Cr

13Cr Super Martensitic Stainless Steel (SMSS) with a specified minimum yield (SMYS) of 110 ksi is commonly used in the Oil & Gas industry.

The present work has been aimed at evaluating the influence of different heat treatment processes on the corrosion resistance of 110 ksi 13Cr SMSS. Bars were produced with a conventional QT process in gas fired batch furnaces as well as on an integrated forging line with inductive re-heating and direct quenching. The bars were tested according to NACE TM0177 Method A to prove the resistance to SSC. Tests were performed in several environments with different Chloride concentrations, pH levels and H2S partial pressures from 0.01 up to 0.05 bar. First results confirm the potential of new production concepts for SMSS steel bar products.

Key words: 13Cr Super Martensitic Stainless Steel, SSC, heat treatment, corrosion resistance, H2S, Forged Bar, Super 13Cr

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