6111 Alumium for Car Body

With the rapid development of the automobile industry, the resulting problems of energy consumption and environmental pollution have become more and more serious. As an effective way to reduce the fuel consumption rate of automobiles and save energy, the lightweight of automobiles has become the trend of the development of the world automobile industry.

There are two ways to reduce the weight of automobiles: one is to optimize the car frame structure; the other is to use lightweight materials. The practice of industrialized countries shows that the former has little potential to be tapped, so the automobile industry generally focuses on the development of lightweight materials to solve this problem.

Among high-strength and light-weight materials, composite materials are difficult to recycle and cause environmental pollution. Magnesium alloys limit their application in automotive body panels due to their poor corrosion resistance and formability.

Aluminum alloy has the characteristics of light weight, wear resistance, corrosion resistance, high specific strength, good impact resistance, easy surface coloring, etc., and more than 80% of aluminum can be recycled and reused, making aluminum alloy an ideal lightweight material for automobiles.

Since the 1970s, developed countries in the automobile industry such as Europe, America and Japan have developed several 6xxx aluminum alloys such as 6009, 6010, 6016, 6111, and 6022. In the early 1980s, North America and Europe respectively developed high-Cu 6111 aluminum and low-Cu 6016 aluminum alloy.

On the basis of 6010 aluminum alloy, the paint hardening and formability of 6111 aluminum alloy were significantly improved, and the 6111 aluminum alloy has higher strength after being treated with baking hardening.

At present, the 6XXX aluminum for car body are mainly 6016, 6111, and 6022 aluminum alloys. European automakers mostly use low-Cu 6016 aluminum alloy with good formability, and the United States uses more high-strength aluminum alloys 6111 and 6022.

Al 6111 compostion