Is Aluminum Better and Safer Than Steel in Cars?

Is Aluminum Better and Safer Than Steel in Cars?

In the automotive sector, the substitution of mild steel for aluminum has grown steadily over the last 50 years. During this period, the amount of aluminum in a car increased from less than 38 kg (85 lb) to 180 kg (397 lb). Initially introduced in the manufacture of heat exchangers, aluminum has gradually made its way to the body-in-white structure of the automobile, not to mention the body panels that will be the strongest growth. It is projected that in 2028, an average car will contain nearly 256 kg (565 lb) of aluminum, which will be integrated into a multi-material package.


Aluminum is an alternative of choice to reduce the mass of structures. The density of aluminum is about three times smaller than that of steel and it is possible to have aluminum alloys having an elastic and ultimate limit similar to those of commercial steels. Note, however, that the modulus of elasticity of aluminum is also three times smaller than that of steel, hence the need to fully integrate all properties when designing a structure. Aluminum Foam makes it possible to reduce the empty load, which increases the payload, which is a major advantage in the transport market.


Aluminum is a good driver, both electrical and thermal. Alusion is used as a high-voltage electrical wire for its conductivity and density ratio. It is also very common to use aluminum in heat transfer systems such as air conditioning heat exchangers, automobile radiators, etc.

Steel or Aluminum? The impact of the choice of materials:

The idea of ​​serialization is that of the necessary updating of the habitat to a society deeply upset, and traumatized by the First and then by the Second World War. Its goal is to propose a mode of living in relation with the time.

The desire to design the house as a modern industrial product, aesthetic, functional and healthy, capable of being produced quickly and in sufficient quantity to meet the housing needs of an entire country, thus gives rise to many experiments that feed, diversify and renew the types of traditional housing. Industrialized houses are intended to be mass-produced, and are designed so that they can be assembled quickly, in a few hours or days, by a small number of workers, and without the need for special technical training. Thus, they seem able to quickly meet the needs of the French in terms of housing. Many studies are conducted with various materials, concrete, wood, metal. The Anglo-Saxon countries are moving towards light structures

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These benefits are particularly attractive in terms of the ecology and sustainable development of cities. The demountable houses allow a better management of the territory, offering the possibility of modifying in the long term certain urbanity mistakes made in the urgency. Steel and aluminum are easily recyclable materials, unlike concrete.

What can the study of the production of industrialized houses contribute to the historiography of aluminum? The objective of the comparative analysis of the course and achievements of two metal house builders.