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Vacuum chart method

There are several differences between Code Case 2286 and the older vacuum chart method. One difference is the upper limit of temperatures that each method has. Code Case 2286 has a limit of 800F for carbon steels found in UCS-23.1 and 800F for stainless steels in UHA-23, whereas the vacuum charts have higher limits for the more common carbon steels and stainless steels (except in a few cases). See Section II, Part D, Mandatory Appendix 3 for criteria and figures with temperature limits for various classes of materials under external pressure and axial compression. It should be noted that neither method has accounted for the effects of creep on buckling. A complete list of what 2286 covers that the... [Pg.56]

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