Low carbon steel is generally rolled into angle steel, channel steel, I-beam, steel pipe, steel strip or steel plate. It is widely used in the production of various building components, containers, cabines, furnace and agricultureal machinery. High quality low carbon steel rolled into thin plate for making car cab, hood and other deep wahsed products. Also it can be rolled into bars for the production of mechanical parts of less dmanding. Low carbon steel is generally not heat treated before use, when the carbon content is achieve 0.15% or more by carburizing or cyanindation, it can be used for shaft, bushings, sprockets and other parts require high surface temperature and ware resistant.
Low carbon steel is limited in its use due to its low strength. Increase the manganese content appropriately, and adding trace amount of vanadium, titanium, niobium and other alloying elements, can greately enhance the strength of stee. If you reduce the carbon content of stee and add a small amount of aluminum, a small amount of boron and carbide-forming element, you can get ultra-low-carbon bainite group enough strength, and maintain good plasticity and toughness.