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aluminum and aluminum alloy knowledge introduction

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Aluminum is a light metal with low density (2.79/Cm3). It has good strength and plasticity. Aluminum alloy has good strength. The strength of super-hard aluminum alloy can reach 600Mpa, and the tensile strength of ordinary hard aluminum alloy can reach 200. -450Mpa, its steel is much higher than steel, so it is widely used in machinery manufacturing. Aluminum is second only to silver and copper and is used in the manufacture of various conductors. Aluminum has good thermal conductivity and can be used as a heat sink material. Aluminum also has good corrosion resistance and good plasticity, and is suitable for various pressure processing. Aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy according to the processing method. The deformed aluminum alloy is further divided into a non-heat treatable reinforced aluminum alloy and a heat treatable reinforced aluminum alloy. The non-heat-treated reinforced type cannot be mechanically improved by heat treatment, and can only be strengthened by cold working deformation. It mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum, and rust-proof aluminum. The heat-treatable reinforced aluminum alloy can be improved in mechanical properties by heat treatment such as quenching and aging, and can be classified into hard aluminum, wrought aluminum, super-hard aluminum, and special aluminum alloy. The aluminum alloy can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. Cast aluminum alloy can be divided into aluminum silicon alloy, aluminum copper alloy, aluminum magnesium alloy and aluminum zinc alloy according to chemical composition.
1. Pure aluminum products Pure aluminum is divided into two categories: smelting and pressure processing. The former is represented by chemical composition Al, and the latter is represented by Chinese Pinyin LG (for aluminum industry).
2. Pressure processing Aluminum alloy aluminum alloy pressure processing products are divided into rust (LF), hard (LY), forged (LD), super hard (LC), coated (LB), special (LT) and brazed ( LQ) and other seven categories. The state of the commonly used aluminum alloy material is three types of annealing (M igniting), hardening (Y), and hot rolling (R).
3. Aluminum Aluminium and aluminum alloys are processed into a certain shape of materials, collectively referred to as aluminum, including plates, strips, foils, tubes, rods, wires, and the like.
4. Casting aluminum alloy Casting aluminum alloy (ZL) is divided into four categories according to the main elements other than aluminum in the composition of silicon, copper, magnesium and zinc. The code numbers are 100, 200, 300 and 400 respectively.
5. High-strength aluminum alloy High-strength aluminum alloy refers to aluminum alloy with tensile strength greater than 480 MPa, mainly for hard aluminum alloys, super-hard aluminum alloys and casting alloys.

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