The driveshaft is the most essential piece of gear for your car. It transfers power from the vehicle's transmission to its rear differential. This difference then transfers power to the rear tires. Without that driveshaft, power would not transfer to your rear wheels.
Although most drive shafts are made of steel, there are many other materials that can be used. Each material has its benefits and drawbacks. If you want to identify your vehicle, you will need to be able to tell the difference between steel and other drive shafts. For more information about steel driveshaft, you can explore this link.
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A shaft made of steel is the most common type you'll find in a driveshaft. This is also what your car will most likely have when it first buys it.
Steel driveshafts are relatively cheap because they are common in car manufacturing. They are not the most costly option, but they do offer quality. Steel shafts are strong sufficient to withstand some punishment and can still reduce vibrations and sounds while driving. They are factory-standard, but they still can do the job.
There are numerous popular types of steel shafts. Chromalloy is the first, and it is still very heavy, but it is more stable at high speeds. You can also get layer tube driveshafts for a fraction of the cost, but they are less consistent than the others.