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  1. RVM21

    Fatigue curves for 3Cr-1Mo at elevated temperature

    Thank you for the response GDD. ASME Sec VIII DIV2 part 5 allows usage of DBA procedures as long as allowable stress is governed by time independent properties. Time independent limit of 3Cr-1Mo materials for Div 2 Cl 2 is below 475 degC. This allows design of 3Cr-1Mo up to 474 degC using DBA...
  2. RVM21

    Fatigue curves for 3Cr-1Mo at elevated temperature

    Hi Members, As per ASME Sec VIII Div 2 Cl2, 3Cr-1Mo creep limit is below 475 degC. But fatigue curves are not available in Sec VIII div 2 or API 579 or in STP-PT-096 – 2022 for 3Cr-1Mo . Could someone advise how we can do a fatigue analysis with a cyclic operation between 430 degC to 470 degC...

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