Types of Stainless steel
Stainless steels are split into 5 families.
- Ferritic steels
Iron – Chromium or Iron – Chromium – Molybdenum alloys. They contain no nickel. - Martensitic steels
usually contain 12 to 19 % chromium and their carbon content varies between 0.08 and 1.2 %. They may contain nickel and molybdenum as well as other elements such as copper, titanium or vanadium. - Austenitic steels
the best known and most widely used steels within the stainless steel family. They contain nickel (usually 7 % or more) and, sometimes, additions of molybdenum, titanium or niobium. - Austeno-ferritic steels
are characterised by a high chromium content (22 % or more) and low nickel content (3.5 to 8 %).
They are more commonly called "duplex steels". - Heat-resisting steels
are grades often used when resistance to temperatures between 900 and
1150 °C is required (EN 10095 standard).
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