REFERENCES 1) J.Watanabe, T.Ishiguro, T, Iwadate and K.Ohnishi(1987), Hydrogen Embrittlement of 21/4Cr-1Mo and 3Cr- 1Mo- 0.25V-B Pressure Vessel Steels”,presented at API/MPC Task Group Meeting on Materials for Pressure Vessels May 1987 2) W.E.Erwin and J.G.Kerr(1982);WRC Bulletin 275,2
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