Cast iron still occupies a place in automotive materials because of its many advantages in performance and cost. The progress of cast iron material makes its application in automobile appear new bright spots.

Although the consumption of steel materials has decreased year by year, the consumption of high-strength steel has increased considerably. High strength structural steel conducive to the lightweight of cars.

In the competition with non-ferrous alloys and polymer materials, iron and steel materials continue to give full play to their advantages of low price and mature technology.

The application prospect of plastics in the automotive industry is also promising. At present, the plastic consumption of many cars in the world has exceeded 120 kg / vehicle, and that of individual models is even higher.

Aluminum matrix composites have low density, high specific strength and modulus, and good thermal fatigue resistance, but their application in automobiles is restricted by price and production quality control.

The main specifications of automobile models are continuously optimized. On the premise of retaining the main parameters of specifications, the structural strength of the whole vehicle is improved and the consumption of consumables is reduced.