Shear stress

Most material handbooks does not show a value for shear stress. I read somewhere that in a steel material, shear stress = yield stress/2 (approx.). Does anyone know if this is true or not. How about wood and plastic? Any comments are appreciated.

 

[quattro]

Shear stress value is usually 60% of the specified yield stress. This applies to metals. I can't help you with wood or plastic.
HTH,
Efraim

 

[uWaveFDL]

A few sites that may have some of the information you are after.

http://www.woodbin.com/ref/wood/strength_defs.htm

http://www.vishay.com/brands/measurements_group/guide/ta/pc/pcindex.htm

http://www.dow.com/engineeringplastics/tech/guide/display.htm?guide=shear2.htm

http://www.pcn.org/Technical Notes - Gates and runners.htm