I have tested experimentally what the torque would be until failure of the female threaded body, but all the tests I have conducted so far the threads fail on the female inlet before the casing around the threads. I would like to know how much torque it would take to have the outside casing fail...
What is the max amount of torque that could be applied to 1 in male threaded NPT pipe when it is threaded into a 1 in female threaded body that is made from ASTM 126 cast iron. The dimensions of the threaded female body are shown below. Essentially I would like to know what is the max stress...