Torsional Yield Stress Torsional Yield Stress davidneedshelp (Automotive) (OP) 8 Sep 08 12:20 I have calculated the maximum torsional shear stress in a round tube and now wish to check that the material I choose (steel, type to be decided) will not fail.Materials data tables give you the tensile yield stress, or 0.2% proof strength. Is there a rule or formula to convert the tensile yield stress into a value used for torsion?Thank you for your help. RE: Torsional Yield Stress CoryPad (Materials) 8 Sep 08 12:53 Torsion induces shear. Shear and tension are related by various failure criteria. A popular one is the von Mises criterion. An Internet search will provide you with what you need. Regards,CoryPlease see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.