Proposal of Design Method Enabling Cr-Mo Steels to be Used in High-Pressure Hydrogen Gas Environment

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  • MATSUNAGA Hisao
    Department of Mechanical Engineering, Kyushu University Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University International Research Center for Hydrogen Energy, Kyushu University
  • YAMABE Junichiro
    Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University International Research Center for Hydrogen Energy, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University
  • MATSUOKA Saburo
    Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University

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Other Title
  • クロムモリブデン鋼を高圧水素ガス環境中で使用するための強度設計指針の提案
  • クロムモリブデンコウ オ コウアツ スイソ ガス カンキョウ チュウ デ シヨウ スル タメ ノ キョウド セッケイ シシン ノ テイアン

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Abstract

This paper presents a design method enabling Cr-Mo steel to be used in high-pressure hydrogen gas. On the basis of a series of experiments, it is suggested that the components can be designed by the conventional design by rule if the following criteria are satisfied under the maximum design pressure of hydrogen gas : firstly, there is no degradation in the tensile strength in slow strain rate tensile (SSRT) test, and secondly, there is no degradation in the fatigue limit. It is also proposed that the components can be designed by the conventional design by analysis, if the following criteria are satisfied under the maximum design pressure of hydrogen gas : firstly, there is an upper bound on the acceleration of fatigue crack growth in hydrogen environment, and secondly, the maximum stress intensity factor of a near-through-wall crack is less than the value of the fracture toughness in air.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 36 (11), 562-567, 2015

    The Surface Science Society of Japan

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