How to select the B value required for calculating the external pressure on materials
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I would like to ask everyone: when using SW6 for calculations, there are some materials for which the B value required for external pressure calculations cannot be found in the 150 database; for example, 09MnNiDR. In such cases, it is necessary to choose a substitute material. How should one go about selecting such a material?
If a material other than GB150 is chosen for the shell, how should a substitute material be selected when performing external pressure design calculations? Answer: For materials other than GB150, or those that are listed in GB150 but not included in the B-value curve, SW6-98 requires the user to select alternative materials to determine the B value when performing external pressure design calculations. When selecting alternative materials, the following principles should be followed: 1) The chemical composition of the actual material should be similar to that of the alternative material ； 2) The elastic modulus of the actual material should be as close as possible to that of the substitute material ； 3) The yield points of the actual material and the substitute material should be as close as possible. There’s a post on the forum that contains the URL I copied: http://bbs.hcbbs.com/viewthread.php?tid=68585