We stock a wide range of shapes including: bars, tubes, sheets, plates and more. And we can cut metal to your exact specifications. See all Blog Posts. What Makes a Stainless Steel Magnetic? In order for stainless steel to be magnetic, a couple of requirements need to be met: The stainless steel must have iron in it The stainless steel must have its crystal structure be arranged in a ferritic or martensitic structure.
The following types of stainless steel are typically magnetic: Ferritic Stainless Steels such as grades , and Martensitic Stainless Steel such as grades , , Duplex Stainless Steel such as grade Ferritic Stainless Steels: Ferritic stainless steels are typically magnetic as they have large quantities of ferrite in their chemical composition.
Martensitic Stainless Steels: Many martensitic stainless steels are magnetic. Duplex stainless steels: Duplex stainless steels are typically magnetic because they contain a mixture of austenite and ferrite. Austenitic Stainless Steel: Austenitic stainless steels have a high amount of austenite which makes them mostly non-magnetic.
Why Does It Matter? The effect of composition and degree of cold work measured by the tensile strength on the permeability, and hence the strength of any magnetic attraction, is plotted below right for a series of austenitic alloys. It shows that increasing the nickel content reduces the effect of cold work on magnetic properties.
Measurements were made on hot rolled sheet 2. Whilst ASSDA has taken all reasonable steps to ensure the information contained herein is accurate and current, ASSDA does not warrant the accuracy or completeness of the information and does not accept liability for errors or omissions. Make the connection. The magnetic properties of materials are affected by their composition, metallic structure, processing methods and physical condition.
Ferromagnetic materials are strongly attracted to a permanent magnet and may also be magnetised to act as a permanent magnet.
Join Now. What is stainless steel? The permeability of any given steel is dependent on the distribution of ferrite, martensite and austenite in its structure. Permeability values for ferromagnetic steels are usually high, at around This is because the principal metallic phases in these steels at room temperature are ferrite and martensite, both of which have high permeability.
Austral Wright. The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet.
Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice. Here are a pipe elbow, and a cap nut, both Grade , as cast. Samples polished with paper before exposure.
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