SS420
SS420 is a type of stainless steel that belongs to the martensitic family of stainless steels. Like SS410, it offers good corrosion resistance and can be hardened by heat treatment. However, SS420 typically contains higher carbon content compared to SS410, which results in increased hardness and wear resistance.
SS420 has fair weldability using conventional welding methods such as gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW). Preheating and post-weld heat treatment are often recommended to reduce the risk of cracking. SS420 is valued for its combination of corrosion resistance, hardness, and wear resistance, making it suitable for various applications in industries such as cutlery, kitchenware, and industrial equipment. Proper heat treatment and processing are essential to achieve the desired mechanical properties and minimize magnetic properties for specific applications.