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Steel Designers' Manual - 6th Edition (2003)
1072 European standards for structural steels
European standards for structural steels
Introduction
As part of the exercise towards the removal of technical barriers to trade, the European
Committee for Iron and Steel Standardization (ECISS) has prepared a series
of European Standards (ENs) for structural steels. The first of these standards, EN
10025, was published in the UK by BSI as BS EN 10025: 1990, partly superseding BS
4360: 1986, which was re-issued as BS 4360: 1990. In 1993, a second edition of BS EN
10025 was made available together with BS EN 10113: Parts 1, 2 and 3 and BS EN
10155. In June 1994, BS EN 10210: Part 1 was published and at the same time BS 4360
was officially withdrawn.The balance of the BS 4360 steels not affected by these ENs
were re-issued in new British Standards BS 7613 and BS 7668. In 1996, with the
publication of BS EN 10137, BS 7613 was withdrawn. BS 7668 will remain until an
EN for atmospheric corrosion resistant hollow sections is available.
Designation systems
The designation systems used in the EN are in accordance with EN 10027: Parts 1
and 2, together with ECISS Information Circular IC 10 (published by BSI as DD
214). These designations are totally different from the familiar BS 4360 designations:
therefore, the following is intended to help users understand them.
Table 1 European and British Standards which have superseded BS 4360
Standard Superseded BS 4360 grades
BS EN 10025: 1993 40 A, B, C, D; 43 A, B, C, D; 50 A, B, C, D, DD
BS EN 10113: Parts 1, 2 & 3: 1993 40 DD, E, EE; 43 DD, E, EE; 50 E, EE; 55 C, EE
BS EN 10137: Parts 1, 2 & 3: 1996 50 F and 55 F
BS EN 10155: 1993 WR 50 A, B, C
BS EN 10210: Part 1: 1994 Hot-finished structural hollow section grades – excluding
weather resistant grades
BS 7668: 1994 Hot-finished weather resistant hollow section grades