It can be seen that the maximum stress of the part is 151.1mpa.<br>For the required stress of materials, according to Chapter 1 of Chapter 1, Volume 1, mechanical design manual (Sixth Edition):
It can be seen that the maximum stress of the parts is 151.1Mpa. As for the required stress of materials, according to the first chapter of the first book of Volume I of Mechanical Design Manual (6th edition), there are: