[Physics] What factors affect the Young’s modulus of elasticity

elasticitymaterial-sciencestress-strain

Is Young's modulus of a material different for various diameters of that material? I would assume it does, but I cannot find a reference. Is the Young's modulus of a $1~\rm mm$ thick steel wire the same compared to a $10~\rm mm$ thick wire of the same steel?

Best Answer

The young's modulus is like the 'spring constant' for a material. It comes from treating the atoms in a material as harmonic oscillators. It is a material property that does not depend on geometry. The young's modulus for both of the materials you mention is equal.

Now the stress they feel will be different under the same applied load.