Introduction to European (EN) Standard Steel Designation System
The Comité Européen de Normalisation (CEN) (European Committee for Standardization) was
founded in 1961 by the national standards bodies in the European Economic Community and EFTA
countries. Now CEN is contributing to the objectives of the European Union and European Economic
Area with voluntary technical standards. CEN is a system of formal processes to produce standards,
shared principally between:
28 national members and the representative expertise they assemble from each country.
These members vote for and implement European Standards (EN);
8 associate members and two counsellors;
The CEN Management Centre, Brussels.
It works closely with the European Committee for Electrotechnical Standardization (CENELEC), the
European Telecommunications Standards Institute (ETSI), and the International Organization for
Standardization (ISO). It also has close liaisons with European trade and professional organizations.
The principal task of CEN is to prepare and issue European standards (EN), defined as a set of
technical specifications established and approved in collaboration with the parties concerned in the
various member countries of CEN. They are established on the principle of consensus and adopted by
the votes of weighted majority. Adopted standards must be implemented in their entirety as national
standards by each member country, regardless of the way in which the national member voted, and
any conflicting national standards must be withdrawn.
The identification of European standards in each member country begins with the reference letters
of the country’s national standards body, for example, BS for BSI in the United Kingdom, DIN for
DIN in Germany, NF for AFNOR in France, etc. It is followed by the initials EN and a sequential
number of up to five digits. For example, BS EN 10025, DIN EN 10025, or NF EN 10025 are all the
same EN standard, which are available in English, French, and German.
An EN standard may contain one document or it may be made up of several parts. For example,
EN 10028 Parts 1 through 8, where each part specifies a particular characteristic of the steel
product, and may not include the word part in the designation, but rather replace it with a hyphen,
e.g., EN 10028-1, meaning Part 1. The prefix “pr” preceding the EN designation identifies the
document as a draft standard that has not yet been approved, e.g., prEN 10088-1.