Young's modulus of copper is a measure of the stiffness or elasticity of copper, which is the ability of a material to resist deformation when a force is applied to it. It is also known as the modulus of elasticity or elastic modulus.
The unit of Young's modulus of copper is pounds per square inch (psi) or Newtons per square meter (N/m²). It is a measure of stress divided by strain, which are both expressed in these units.
Young's modulus of copper is determined by measuring the stress and strain of a copper sample under tensile testing. The stress is the force applied to the sample divided by its cross-sectional area, while the strain is the change in length of the sample divided by its original length.
The typical value of Young's modulus of copper is around 17-19 million psi (117-131 GPa). However, this value can vary depending on the purity, grain size, and other factors of the copper material.
Copper has a relatively high Young's modulus compared to other materials, such as aluminum and steel. However, it is lower than materials like titanium and tungsten. This means that copper is stiffer and less elastic than aluminum and steel, but more elastic than titanium and tungsten.