Hardness characteristics of aluminum alloy manhole products.

Hardness characteristics of aluminum alloy manhole products ：

Aluminum alloy is a lightweight metal material widely used in various industrial fields.

The hardness range is usually between 40 and 150 HB (Brinell hardness), which is relatively wide, mainly because the properties of aluminum alloy can be adjusted by adding different alloying elements. For example, the hardness of antirust aluminum represented by 3003 and 3A12 is about 45-70 HB; However, Al-Si alloys represented by 4043 and 4045 may have higher hardness.

The hardness of aluminum alloy is influenced by many factors, such as its alloy composition, heat treatment process and cold working degree.

Although the hardness of aluminum alloy may not be as high as that of some other metals, its light weight, corrosion resistance and good processability make it widely used in aviation, architecture, automobile and other fields.