Specific modulus

Specific modulus is a materials property consisting of the elastic modulus per mass density of a material. The specific modulus is often important in aerospace applications in which maximum strength for minimum weight is required.The dimensional analysis yields units of distance squared per time squared. A related property is the specific strength, a more general term that compares any unit of strength (not just elastic modulus) to its density.

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The structural members of the Crew Exploration Vehicle have been specified to be an aluminum-lithium alloy for this property, among others.

See also

specific strength