Characterization of Martensitic Stainless Steels in PM Components
Martensitic stainless steels are widely used for their superior mechanical properties and moderate corrosion resistance. Martensitic 400 series stainless steel can be heat treated to a wide range of hardness and strength levels. There are many different variations of martensitic 400 series stainless steel, each with its own unique property characteristics for corrosion resistance, mechanical and physical properties as well as surface aspects. Selecting the right martensitic stainless steel grade for a specific application is very important in order to achieve a workable solution. This paper will evaluate properties of common 400 series stainless grades to determine the optimum material and processing methods for required properties. As a comparison, properties of a precipitation-hardened (PH) steel were also examined.