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Advantages and Disadvantages of SS400 Steel

What are the advantages and disadvantages of SS400 steel, the most widely used steel?

Advantage
Because it is a widely distributed general-purpose material, it is cheaper and easier to obtain than other metal materials. The material is soft compared to stainless steel, so it is easy to process such as cutting and sheet metal processing, and can be used for various purposes. It is also suitable for welding as it has a lower carbon content and is less susceptible to heat. However, when you want to weld thicker materials such as a plate thickness of 25mm or more, it is best to use welding materials such as SM materials instead of SS400 steel.

Shortcoming
SS400 steel is a very common material, so it is not a particularly strong material as an iron steel material. When stronger materials are needed, other materials need to be researched. And because it has a low carbon content and cannot be quenched, it cannot be processed to obtain hardness only on the surface. It is also prone to rust and requires protection by electroplating, painting, and oxide film (black skin).