The density of 7075 aluminum coil is 2.81g/cm3, the elastic modulus is 71GPa, and the Poisson’s ratio is 0.33. Its tensile strength is 524MPa, yield strength is 455MPa, and hardness is 150HB. These physical properties indicate that this alloy material has high strength and hardness, good plasticity and toughness, and can withstand large loads and impacts.