EN10025-5-2005(10)

EN 10025-5:2004 (E)

3.1

normalizing rolling

rolling process in which the final deformation is carried out in a certain temperature range leading to a material condition equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing

The abbreviated form of this delivery condition is +N.

NOTE In international publications for both the normalizing rolling, as well as the thermomechanical rolling, the expression "controlled rolling" may be found. However in view of the different applicability of the products a distinction of the terms is necessary.

3.2

as-rolled

delivery condition without any special rolling and/or heat treatment condition The abbreviated form of this delivery condition is +AR.

3.3

steel with improved atmospheric corrosion resistance

steel in which a certain number of alloying elements, such as P, Cu, Cr, Ni, Mo, .... has been added in order to increase its resistance to atmospheric corrosion, by forming an auto-protective oxide layer on the base metal under the influence of weather conditions

NOTE 1 NOTE 2

Steel with improved atmospheric corrosion resistance is often called weathering steel.

Additional information for the use of steel with improved atmospheric corrosion resistance is given in Annex C.

4 Classification and designation

4.1 Classification

4.1.1 Main quality classes

The steel grades specified in this document shall be classified as alloy special steels according to EN 10020. 4.1.2 Grades and qualities

This document specifies the steel grades S235 and S355 (see Table 5), which differ in their mechanical properties. The steel grades may be supplied in qualities J0, J2 and K2. The qualities differ in specified impact energy requirements.

Grade S355 is subdivided into the classes W and WP, which differ mainly in their carbon and phosphorus contents (see Tables 2 and 3) and availability (see Table 1).

4.2 Designation

4.2.1

The designation shall be in accordance with EN 10025-1.

NOTE For a list of corresponding former designations and the former designations from EURONORM 155 (1980) and EN 10155:1993 see Annex A, Table A.1.

4.2.2

The designation shall consist of:

number of this document (EN 10025-5);

steel name or the steel number; the steel name consisting of:

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