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02554 SOHIC RESISTANCE OF C-Mn PLATE STEELS USED IN REFINERY SERVICE

This research effort was designed to evaluate stress-oriented hydrogen-induced cracking (SOHIC) behavior of a broad range of advanced plate steels (0.002 wt% sulfur) that were not produced to enhance resistance to cracking in wet H2S environments. Test results indicated that SOHIC resistance was adversely affected by microstructural (ferrite/pearlite) banding. However, additional factors also played a role in determining SOHIC behavior.

Product Number: 51300-02554-SG
ISBN: 02554 2002 CP
Author: M.S. Cayard, R.D. Kane, and R.J. Horvath
Publication Date: 2002
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This research effort was designed to evaluate stress-oriented hydrogen-induced cracking (SOHIC) behavior of a broad range of advanced plate steels (0.002 wt% sulfur) that were not produced to enhance resistance to cracking in wet H2S environments. Test results indicated that SOHIC resistance was adversely affected by microstructural (ferrite/pearlite) banding. However, additional factors also played a role in determining SOHIC behavior . A relationship was developed for the predicted average cracking ratio (PACR) that included the influence of banding index, carbide microhardness and calcium treatment. Keywords: stress-oriented hydrogen-induced cracking, SOHIC, C-Mn steels, sour service, H2S

This research effort was designed to evaluate stress-oriented hydrogen-induced cracking (SOHIC) behavior of a broad range of advanced plate steels (0.002 wt% sulfur) that were not produced to enhance resistance to cracking in wet H2S environments. Test results indicated that SOHIC resistance was adversely affected by microstructural (ferrite/pearlite) banding. However, additional factors also played a role in determining SOHIC behavior . A relationship was developed for the predicted average cracking ratio (PACR) that included the influence of banding index, carbide microhardness and calcium treatment. Keywords: stress-oriented hydrogen-induced cracking, SOHIC, C-Mn steels, sour service, H2S

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