Al is a relatively light metal, and its compounds are widely distributed in nature. Aluminum resources are very abundant in the earth's crust, reaching about 40 to 50 billion tons. Its resources are second only to oxygen and silicon. , ranking third. The content of metals on the earth is relatively abundant, which can be said to be No.1. Because it has good chemical and physical properties, it is not only light in weight and strong in texture, but also has good electrical conductivity, thermal conductivity, heat resistance, nuclear resistance, radiation resistance, ductility, etc. It can be said to be an important basic material for the development of the national economy.
For the three major fields of aviation, construction, and automobiles, its existence is essential, whether it is the production and application of aluminum or the production and application of aluminum alloys. There are eight major series of aluminum series, namely 1 series, 2 series, 3 series, 4 series, 5 series, 6 series, 7 series and 8 series. The 2024 aluminum rod we are talking about today has a higher hardness and a higher copper content, about 3-5%. 2000 series aluminum rods are aviation aluminum materials and are not commonly used in conventional industries. The heat treatment of 2024 aluminum rods generally uses T3, T4, and T351, so its mechanical properties are relatively good. In the T3 state, its specific parameters are tensile strength 470MPa, 0.2% yield strength 325MPa, elongation: 10%, Fatigue strength 105MPa, hardness 120HB. It can be used on aircraft structures, rivets, truck wheels, propeller components and other structural parts.
