Stainless steel 430 (EN 1.4016) with 17% chromium, which is used in washing machine drums, dishwasher interiors and refrigerator exteriors. Type 409 Type EN 1.4003+Nb) is used extensively in the manufacture of automotive exhausts Variants of EN 1.4105 are soft magnetic grades used in injectors, . Martensitic stainless steels offer a wide range of properties and are used as stainless engineering steels, stainless tool steels, creep resisting steels. They fall into 4 categories (with some overlap): Martensitic stainless steels form a family of stainless steels that can be heat treated to provide the adequate level of mechanical properties. The heat treatment typically
Duplex stainless steel Duplex stainless steel Duplex stainless steels is the most recent family of stainless steels. They are called duplex (or austenitic-ferritic) grades because their metallurgical structure consists of two phases, austenite (face-centered cubic lattice) and ferrite (body centered cubic lattice) in roughly equal proportions. They are used for their good mechanical properties in the as-cast (and therefore as-welded condition) and/or their excellent corrosion resistance properties (particularly to stress corrosion cracking). They tend to be divided in three sub groups: Grade 1.4462 which has been the grade initially developed. and reperesents the "mid-range" of properties and is perhaps the most used today