H Elastic modulus of section steel
The general definition of modulus of elasticity is that stress is divided by strain. When the material is in the elastic deformation stage, its stress and strain should be changed into a positive proportion (that is to say, according to Hooke's law), and the coefficient of proportionality is called the elastic modulus.
Generally speaking, elasticity exerts an external effect on an elastic body, and it changes in shape (called strain)
The elastic modulus of steel is 2.1 * 10^7N/cm L.
