Applications of modulus of elasticity: As the word implies, "Modulus of Elasticity” associates to the elasticity or "flexibility" of a material. The value of modulus of elasticity is much significant associating to deflection of certain materials employed in the construction business. Take for illustration the general E value of mild carbon steel is around 200 GPA as compared to around 70 GPA for aluminum. This merely interpret that aluminum is 3 times more flexible than steel.