|Table of Contents |Section Contents|

PREFERRED SI UNITS FOR BENDING STRESS AND TORSIONAL STRESS

Bending stress, sigma, = Moment * c / I

Torsional stress, tau, = Torque * r / J

Moment or   I or    c or   Sigma or
Torque      J       r      Tau
---------   -----   ----   ---------
N * m       m^4     m      Pa
N * m       cm^4    cm     MPa
N * m       mm^4    mm     GPa
kN * m      m^4     m      kPa
kN * m      cm^4    cm     GPa
kN * m      mm^4    mm     TPa
N * mm      mm^4    mm     MPa
kN * mm     mm^4    mm     GPa
---------   -----   -----  ---------