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Keywords: Gr.91
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Proceedings Papers

Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A029, July 17–22, 2022
Paper No: PVP2022-82890
... Abstract Two significant improvements were achieved in 2019 and 2021 Editions of ASME Boiler and Pressure Vessel Code, Section III, Division 5. One is an update of allowable stress values in Gr.91 steel as 9Cr-1Mo-V steel. The time for which the values of S r , expected minimum stress...
Proceedings Papers

Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A017, July 13–15, 2021
Paper No: PVP2021-60773
... Abstract The ASME Boiler and Pressure Vessel Code (ASME BPVC) Section III, Division 5, Subsection HB, Subpart B provided only one design fatigue curve for Grade 91 steel (Gr.91) at 540 °C (or 1000 °F) in 2019 and earlier versions. To overcome this disadvantage, The ASME Section III Working...