# Ultimate Tensile Strength

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Ultimate tensile strength, abbreviated as UTS, also called tensile strength or ultimate strength, is the maximum stress a material can resist before it starts to elongate.

## Ultimate Tensile Strength formula

 $$\large{ UTS = \frac{ F }{ A_c } }$$

### Where:

 Units English Metric $$\large{ UTS }$$ = ultimate tensile stress $$\large{ \frac{lbf}{in^2} }$$ $$\large{ Pa }$$ $$\large{ A_c }$$ = area cross-section of material $$\large{ in^2 }$$ $$\large{ mm^2 }$$ $$\large{ F }$$ = force or maximum load $$\large{ lbf }$$ $$\large{ N }$$