The automotive industry uses a wide variety of materials, which the authors of the video decided to subject to extreme stresses, unlike carbon. More precisely, all these materials have been tested by a hydraulic press.
The video does not claim to be a scientific study, but for the sake of purity of the experiment, all materials were presented in the form of hollow cylinders of the same size. In the video, we see cylinders made of aluminum, brass, titanium, low-grade steel, stainless steel, PVC and acrylic, and they are all crushed with the same force, but of course they collapse at different pressures, which are indicated in kilograms.
In addition, the cylinders are weighed before testing. The lightest was an acrylic cylinder – 9 grams. PVC and carbon fiber cylinders weigh 11 grams each. The heaviest of all is a stainless steel cylinder – 59 grams. Low-grade steel weighs 58 grams, aluminum 20 grams, titanium 33 grams and brass 45 grams.
Acrylic surprisingly lasted longer than expected and withstood the pressure of 1538 kg. The PVC cylinder collapsed at a pressure of 1004 kg. Carbon, on the other hand, withstood a pressure of 2998 kg – pieces began to break from it at a pressure of about 2000 kg, until only a pile of fragments and wires of the cylinder remained. Aluminum withstood a pressure of 3840 kg, and titanium – 9190 kg!
But this is all nonsense compared to the strength of stainless steel. It withstood 15,800 kg – five times the load compared to carbon fiber. But it is also five times heavier. It is from such steel that car body frames are made.
Video: Youtube