The primary purposes of EN 10020 are twofold:
Understanding EN 10020: The Essential Guide to European Steel Classification
Helping engineers align material expectations (like weldability or heat treatment response) with the standardized quality-class approach.
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: Steels that contain at least one element at or above the specified threshold. Stainless Steels : Defined as having at least 10.5% Chromium and a maximum of 1.2% Carbon Other Alloy Steels
A steel is considered non-alloy if the limit values for the alloying elements are lower than those specified in the standard.
Because EN standards are protected by copyright, the full-text cannot legally be downloaded for free from public forums or file-sharing websites. To obtain a legitimate, fully updated copy, professionals should purchase it through authorized national standards organizations or commercial libraries, such as: BSI (British Standards Institution) DIN (Deutsches Institut für Normung) AFNOR (Association Française de Normalisation) ISO/CEN official bookstores The primary purposes of EN 10020 are twofold:
The EN 10020 standard is a official document used in Europe. It sets the rules for defining and classifying steel grades. It ensures that everyone in the steel industry speaks the same language. The standard does two main things:
and Industrial usecases are availiable for:
The designation of steels consists of:
EN 10020 functions as a foundational vocabulary rulebook. It does not provide the technical delivery conditions for ordering specific steel plates or bars. Instead, other European standards rely on its definitions to assign designations:
The European Committee for Standardization (CEN) published the current definitive version as , which officially superseded the older 1988/1991 editions. Depending on the issuing country, the document may be prefixed by national standard designations. For example, the English version is BS EN 10020 , while the German version is DIN EN 10020 .
Non-alloy steels are defined as those where none of the elements in the table above reach the specified limit values. The most common example is carbon steel, where the carbon content is the primary alloying element. Non-alloy steels are typically the cheapest and most widely used steel type, used in construction, automotive, and general engineering applications. If you share with third parties, their policies apply
Do you need steel that or steel that is very strong ?
Below are the maximum weight percentage limits for common elements. Exceeding these values shifts the steel from non-alloy to alloy: Limit Value (% by weight) Chromium (Cr) Cobalt (Co) Copper (Cu) Manganese (Mn) Molybdenum (Mo) Nickel (Ni) Silicon (Si) Titanium (Ti) Vanadium (V) 3. Classification by Quality Class