Steel Grades Specifications

Grades, properties, and nearest equivalents

Table 1

EN 10025: part 2: 2004 Non-alloy structural steels

Comparison between grades in EN 10025: part 2: 2004 and nearest equivalent versions in EN 10025 : 1993 and BS 4360 : 1990
EN 10025 : part 2 : 2004 EN 10025 : 1993 BS 4360 : 1990
Grade Yield (Reh) min Tensile (Rm) Charpy V-notch longitudinal Grade Grade
Strenght at t=16mm (Mpa) Temp (°C) Energy (J) t=16mm
S185 185 290/510 - - S185 -
-1 235 340/470 - - S235 40A
S235JR 2 20 27 S235JRG1/G2 40B
S235J0 0 27 S235J0 40C
S235J2 -20 27 S235J2G3/G4 40D
-1 275 410/560 - - S275 43A
S275JR2 20 27 S275JR 43B
S275J0 0 27 S275J0 43C
S275J2 -20 27 S275J2G3/G4 43D
-1 355 490/630 - - S355 50A
S355JR2 20 27 S355JR 50B
S355J0 0 27 S355J0 50C
S355J2 -20 27 S355J2G3/G4 50D
S355K2 -20 40 S355K2G3/G4 50DD
E295 295 470/610 - - E295 -
S335 335 570/710 - - S335 -
E360 380 650/830 - - E360 -

1 MPa = 1N/mm2
Note

For all products to be compliant with the EU Construction Products Directive (CPD 89/106/EC) the material must offer a guaranteed minimum impact performance. This has resulted in the removal of this grade from the standard, and the lowest grade now offered is the JR version for each yield strength variation.

 

EN 10025: 2004 is the new European standard for structural steel

EN 10025: 2004 is the new European standard for structural steel.

former standards include EN10025: 1993.

History of the Standard

The European Committee for Iron and Steel Standardisation is responsible for producing the European Standards (ENs) for structural steels. The first of these standards, EN 10025, was published in the UK by BSI as EN10025: 1990, partly superceeding BS 4360: 1986, which was re-issued as BS 4360: 1990. In 1993, a second edition of EN 10025 was made available together with EN10113: parts 1,2 & 3 and EN 10155. In June 1994, EN 10210: part 1 was published and at the same time BS4360 was offically withdrawn.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 In 1996, with the publication of EN 10137, BS 7613 was withdrawn. BS 7668 will remain until an EN for atmospheric corrosion resistant hollow sections is available.

In 2004 the stand EN 10025 was revised to address the provisions of EU Construction Products Directive (89/106/EEC). It is now published in six parts to bring together almost all the ‘Structural Mettallic Products’ into one comprehensive standard.

Grade designation systems

The designation systems used in the new standards are similar but not identical to EN 10025 : 1993 and very different to the familiar BS 4360 designations, so the guide below has been prepared to assist purchasers, specifiers, designers and users of steel.

Symbols used in EN 10025 : part 2 : 2004

Non-alloy structural steels

S.. Structural Steel
E.. Engineering Steel
235… Minimum yeild strenght (Reh) in MPa @16mm
…JR.. Longitudinal Charpy V-notch impacts 27 J @ +20°C
…J0.. Longitudinal Charpy V-notch impacts 27 J @ 0°C
…J2.. Longitudinal Charpy V-notch impacts 27 J @ -20°C
…K2.. Longitudinal Charpy V-notch impacts 40 J @ -20°C
…+AR Supplied condition as rolled
…+N Supplied condition as normalised or normalised rolled
Customers options
…C.. Grade suitable for cold forming
…Z.. Grade with improved properties perpendicular to the surface

Examples: S235JR+AR, S355KC+N

 

Symbols used in EN 10025 : part 3 : 2004

Normalised/normalised rolled weldable fine grain structural steels

S.. Structural Steel
.275… Minimum yeild strenght (Reh) in MPa @16mm
…N.. Longitudinal Charpy V-notch impacts at temperatures not lower than -20°C
…NL.. Longitudinal Charpy V-notch impacts at temperatures not lower than -50°C
Customers options
…Z.. Grade with improved properties perpendicular to the surface

Examples: S275N, S420NL Z35

Symbols used in EN 10025 : part 4 : 2004

Thermomechanically rolled weldable fine grain structural steels

S.. Structural Steel
.275… Minimum yeild strenght (Reh) in MPa @16mm
…M.. Longitudinal Charpy V-notch impacts at temperatures not lower than -20°C
…ML.. Longitudinal Charpy V-notch impacts at temperatures not lower than -50°C
Customers options
…Z.. Grade with improved properties perpendicular to the surface

Examples: S355M, S460ML Z25