In general terms, auto body sheet metal alloy should maintain significant levels of work hardening to high strains, preferably show positive strain rate sensitivity, and should not fail prematurely due to microstructural damage at heterogeneities.
Right now, the use of aluminium for Auto Body Sheet is largely limited to closures—doors, hoods, fenders, roofs. Closures get bolted onto the structure of the car, making it relatively easy to transition to aluminium. The application of aluminum panels for automotive use is nothing new. Hoods and deck lids have been made with aluminum for years.
Why is aluminum becoming so popular? The government continues to put stricter fuel economy requirements on cars. It's all about weight, so lightweight materials are going to become more and more common. Many popular manufacturers have chosen to use aluminum components in their vehicles make. This includes Tesla, Audi, BMW, Land Rover, Ford, Subaru, and many more.
Specification of Auto Body Sheet Metal are:
The Properties of Sheet Metal For Auto Body are:
Advantages of aluminum sheet metal for auto body:
1. Car lightweighting. The proportion of aluminum is only one-third of that of stainless steel, which reduces the weight of the body and saves fuel.
2. Automotive aluminum alloys with special oxidation treatment have good corrosion resistance, uv resistance and scratch resistance. What is important is that the specific gravity is only one third of that of stainless steel, which reduces the weight of the body and saves fuel.
3. The surface of automotive aluminum alloys has an oxide film and does not require galvanizing.
4. When impacted by external force, it can absorb the impact force well and protect the safety of the driver and passengers to the greatest extent.
5. After the car is scrapped, automotive aluminum alloys can be recycled. The loss of aluminum is only about 5%, and its recycling performance is higher than other metals.