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PRCI Report 107
- Effect of Hydrogen on the Properties of High-Strength, Controlled-Rolled Line Pipe Steels
- Report / Survey by Pipeline Research Council International, 04/22/1977
- Publisher: PRCI
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L11877e
Battelle Memorial Institute
Need: This report describes an investigation of the susceptibilities of high-strength controlled-rolled line pipe steels to hydrogen stress cracking (HSC) and the effect of long-term cathodic charging with hydrogen on their mechanical properties.
Result: Studies of the susceptibility of higher strength, controlled rolled steels to hydrogen-stress cracking and of the effect of longtime cathodic charging with hydrogen on the mechanical properties of those steels were conducted. Because of the occurrence of these failures, studies were conducted to determine the maximum strength level of steel that could be used for natural gas transmission pipe cathodically protected in the soil without encountering HSC failures.
Benefit: This study suggests that some of the controlled rolled steels are somewhat more sensitive to hydrogen cracking and hydrogen damage that are conventionally processed pipe steels of the same strength level. Under more severe hydrogen-charging conditions, all steels failed by HSC at applied stresses equal to 80 percent or more of their yield strengths.
Battelle Memorial Institute
Need: This report describes an investigation of the susceptibilities of high-strength controlled-rolled line pipe steels to hydrogen stress cracking (HSC) and the effect of long-term cathodic charging with hydrogen on their mechanical properties.
Result: Studies of the susceptibility of higher strength, controlled rolled steels to hydrogen-stress cracking and of the effect of longtime cathodic charging with hydrogen on the mechanical properties of those steels were conducted. Because of the occurrence of these failures, studies were conducted to determine the maximum strength level of steel that could be used for natural gas transmission pipe cathodically protected in the soil without encountering HSC failures.
Benefit: This study suggests that some of the controlled rolled steels are somewhat more sensitive to hydrogen cracking and hydrogen damage that are conventionally processed pipe steels of the same strength level. Under more severe hydrogen-charging conditions, all steels failed by HSC at applied stresses equal to 80 percent or more of their yield strengths.
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