Property Information

Young's Modulus and Specific Stiffness


Design issues


Tensile testing is used to find many important material properties. The compression test is similar but uses a stocky specimen to prevent bending.

Units & Values

Young's modulus is equal to elastic stress/strain. Strain has no units to the units are the same as stress: N/m2, or Pascals (1 Pa = 1N/m2 ; 1 GPa = 1000 N/mm2

Specific stiffness (more properly called specific modulus) is Young's modulus/density - it is mostly used for comparing materials so the units are not important.