Permissible Value of Maximum Shear Stress calculator uses Maximum shear stress=05*Tensile Yield Strength/Factor of safety to calculate the Maximum shear stress, The Permissible Value of Maximum Shear Stress formula is defined as the stresses that are located close to the blade surface in the region where viscous residual is calculated using kε approachShear Strength τ(MPa) Tensile Strength σb(MPa) Elongation σs(%) Yield Strength δ(MPa) Elastic Modulus Е(MPa) Industrial pure iron for electricians C>0025 DT1 DT2 DT3 annealed 180 230 26 Electrical Silicon Steel D11、D12 D21、D31 D32、D370 D310~340 S41~48 annealed 190 230 26 Ordinary carbon steel Q195 unannealed 260~3 315~390 28~33 195 Q215 270~340 335~410 26~31 215 Q235 310~380USS Ultimate Shear Strength, UTS Ultimate Tensile Strength, SYS Shear Yield Stress, TYS Tensile Yield Stress Material Ultimate stress Ultimate stress Fiberglass/epoxy (23 o C) 7 26 When values measured from physical samples are desired, a number of testing standards