420 Stainless Steel Characteristics, Advantages and Applications
1. Characteristics
420 stainless steel belongs to martensitic stainless steel, which has unique physical and chemical properties. Its chemical composition contains high chromium element, which gives 420 stainless steel good corrosion resistance. However, compared to some austenitic stainless steels, the corrosion resistance of 420 stainless steel is slightly lower, but in mild corrosive environments, such as in the general atmosphere, freshwater environment, 420 stainless steel can effectively resist corrosion. This stainless steel is harder, and the hardness of 420 stainless steel can be further enhanced through appropriate heat treatment. Its strength is also more considerable, and can withstand certain mechanical stress. In addition, 420 stainless steel also has a certain degree of magnetism, which is a major feature in some application scenarios that require magnetic properties.
2. Advantages
420 stainless steel has significant advantages in many stainless steel materials. First of all, it is the cost advantage, compared with the 300 series and other high-grade stainless steel, 420 stainless steel raw material costs and processing costs are relatively low, which makes it in the cost control is more stringent in the project to become the ideal choice. In terms of machinability, 420 stainless steel excels, as it is easy to cut, grind and polish into a variety of precision shapes and components. Its good heat treatment performance is also a major advantage, through quenching and tempering and other heat treatment processes, 420 stainless steel can be obtained in different combinations of hardness and toughness, to meet the diverse engineering needs.
3. Scope of application
420 stainless steel has a wide range of applications in many industries. In the machinery manufacturing industry, 420 stainless steel is often used to make parts that require hardness and wear resistance, such as gears and shafts. These parts need to withstand large friction and mechanical stress in the working process, 420 stainless steel can well meet its performance needs. In the valve manufacturing industry, 420 stainless steel is also used to manufacture some valves that work under normal temperature and pressure, and its corrosion resistance and mechanical properties can ensure the normal operation of the valve.