The steel family includes different types of alloys with properties that are also markedly different from each other. Stainless steel has an austenitic microstructure and is highly resistant to corrosion. Tempering steels, on the other hand, can be heat-treated or treated with carburizing or nitriding treatments to create a hard and wear-resistant surface treatment, while maintaining good ductility and core toughness. Finally, structural steels are the optimal solution for the construction of mechanical components with moderately intense loads.