In previous papers, practical limits on the maximum applied load for standard ASME B16.5 and B16.47 carbon steel, weld neck and slip-on pipe flanges were examined. A new code equation for the tangential (hoop) stress at the small end of the hub for a weld neck flange and new flange factors for a slip-on flanges were developed to facilitate calculation of the limits using elastic analysis. The results were verified against elastic-plastic Finite Element Analysis (FEA). In this paper, the work is extended to include other flange materials and verification is once again performed against elastic-plastic FEA. This paper is a continuation of the papers presented during PVP 2006, PVP 2007 and PVP 2008 (Brown [1–3]) and it extends the scope of the proposed methodology for determining flange stress limits in to any given flange material, size and configuration.

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