Specific modulus is a materials property consisting of the elastic modulus per mass density of a material. It is also known as the stiffness to weight ratio or specific stiffness. High specific modulus materials find wide application in aerospace applications where minimum structural weight is required. The dimensional analysis yields units of distance squared per time squared.
$specific modulus = E/\rho$, where $E$ is elastic modulus and $\rho$ is density.
Applicable units are those of quantitykind:SpecificModulus
Specific Modulus
Specific Stiffness
Stiffness to Weight Ratio