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2. Stainless steel structure
Stainless steels are iron-based metal alloys, or more precisely steel-based (iron-carbon alloy), which must contain at least 10.5% chromium (according to European standard EN 10088-1), and often other additives such as nickel (or its substitute, manganese), and, to a lesser extent, molybdenum.
Before examining the various equilibrium diagrams, it is useful to recall the allotropic varieties of iron:
At low temperatures and up to 910°C, iron has a cubic-centered structure, known as α-iron;
From 910°C, it is transformed into γ-iron, which has a face-centered cubic structure;
a further transformation takes place at 1,400°C, yielding δ iron with a cubic-centered structure.
These transformations, which are reversible,...
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Stainless steel structure
Conclusion
Bibliography
Standards and norms
French Standards Association (AFNOR)
- Aciers et alliages de nickel réfractaires - NF EN 10095 - 1999
- Définition et classification des aciers - NF EN 10020 - 2000
- Systèmes de désignation des aciers - NF EN 10027 - 2017
- Stainless steels – Part 1: list of stainless steels - NF EN 10088-1 - 2023
- Stainless steels – Part 2: technical delivery conditions for general-purpose...
Directory
Stainless steel producers
Europe
Acciaiaierie Valbruna (Italy) http://www.valbruna-stainless-steel.com
Acerinox (Spain) http://www.acerinox.es
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