Steel vs Aluminum What is the Best for a Car?
Collision Energy Absorption Systems:
The collision energy of a car with an obstacle is absorbed mainly by the front and rear systems, and then due to the deformation of the longitudinal beams. Energy absorption systems consist of a bumper beam and two squeezable boxes. These systems are designed to minimize vehicle damage at low impact speeds and absorb maximum energy at high collision speeds.
Aluminum collision energy absorption systems are usually based on aluminum profile structures. The right choice of alloy for crumpled structures (“crash boxes”) ensures that this system undergoes extensive plastic deformation before cracks begin to form. With equal absorption energy, aluminum systems make it possible to reduce the weight of these systems by 40% compared to steel systems.
Aluminum Protects Pedestrians:
To protect pedestrians, it is necessary to provide the bumper with the possibility of significant deformations with little effort. To do this, we need material and structures made of it, which would provide a low level of forces upon impact and controlled characteristics of the absorption of collision energy. The right choice of aluminum alloy and the shape of the profiles make it possible to fulfill all these requirements.
Weight Loss but not Size:
The lower weight of the car facilitates in the driving and hence reduces its braking distance. These factors are very important for preventing emergencies condition when you are driving. Studies have shown that the decisive factor in ensuring the safety of a car is its size, not weight. Reducing the weight of the car reduces the forces that arise in a collision, and the energy that needs to be extinguished. If the size of the car is reduced, then the internal hard space, which is necessary for the survival of the driver and passengers, is reduced. Therefore, making cars easier without reducing their size is a positive measure in terms of its safety.
Lighter Cars — Higher Safety:
An additional factor in improving road safety is the compatibility of various vehicles in an accident. The big difference in weight, of course, is significantly more dangerous for a lighter car. Therefore, the overall relief of all cars while maintaining their overall dimensions could help to increase the survival rate for all road users. In this direction, aluminum still has a lot of work.
Aluminum is three times lighter than steel. The increased stiffness of the aluminum structure of the car body is the result of a higher thickness of its material. Aluminum structural elements are usually one and a half times thicker similar to steel. An additional opportunity to increase the rigidity of the body is given by the use of multi-cavity aluminum profiles and large high-strength aluminum castings of complex design. All this makes it possible to increase the rigidity of the car body while reducing its weight by 40-50% compared with a steel body. So from above discussion it is clear that Aluminum one of light weight metal is good for automotive Industry. The use of SAF Aluminum by Cymat Technologies in the parts that make up cars and trucks has increased steadily in the last decade.
