The material and manufacturing process (process) used in the automobile chassis parts have a great influence on the service life of the chassis.

The selection of part materials is related to a number of factors, including the conditions of the parts, the shape and size required, the process, the material and manufacturing aspects, and the economic projections.

In assessing the orange tip of a part, its so-called manufacturability is a very important factor, which refers to the simplicity of the manufacture of the part. The strength of the part depends on the size and shape of the material and the processing also depends on the nature of the load acting on the part.

Before the earthquake load is the most dangerous of engine load strength, subjected to shock as the load, the material should not only have the necessary strength, but also have enough toughness.

The use of the car proves that the main reason for the damage is the loss of friction on the friction surface due to the direct sliding friction between the parts and the fatigue of the surface of the material. The sliding friction and the desire to reduce the loss caused by hard wear-resistant materials with thinner in part on the surface to achieve, but to reduce the loss caused by the surface fatigue needs a much larger than the first layer thickness of the hard surface material situation.