As part of the exercise towards the removal of technical barriers to trade, the European Committee for Iron & Steel Standardisation (ECISS) has prepared a series of European Standards (ENs) for structural steels.
EN 10025 : 2004 is the new European standard for structural steel. The following pages show the new grades, properties and the nearest equivalent grades from former standards including EN 10025 : 1993. The grade designation system is also explained.
Christmas Stockholders can provide a very wide range of rolled sections and plates and the information following has been prepared to show how the new standard applies to these products.
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 EN 10025:1990, partly superseding BS 4360 : 1986, which was reissued as BS 4360 : 1990. In 1993, a second edition of EN 10025 was made available together with EN 10113 : parts 1,2 & 3 and EN 10155. In June 1994, EN 10210 : part 1 was published and at the same time BS 4360 was officially withdrawn.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In 1996, with the publication of EN 10137, BS 7613 was withdrawn. BS 7668 will remain until an EN for atmospheric corrosion resistant hollow sections is available.
In 2004 the standard 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 Metallic Products” into one comprehensive standard.
The new standard is published in six parts and draws together earlier standards to produce one standard for the majority of structural steel products.
The six parts are:
The designation systems used in the new standard are similar but not identical to EN 10025 : 1993 and very different to the more familiar BS 4360 designations so the guide below has been prepared to assist purchasers, specifiers, designers and steel users.
Comparison between grades in EN 10025: part 2 : 2004 & 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 | |
| Strength at t = 16mm (MPa) | Temp (deg C) | Energy (J) t = 16mm |
||||
| S185 | 185 | 290/510 | - | - | S185 | - |
| - *1 | 235 | 360/510 | - | - | 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 |
| S275JR *2 | 20 | 27 | S275JR | 43B | ||
| S275J0 | 0 | 27 | S275J0 | 43C | ||
| S275J2 | -20 | 27 | S275J2G3/G4 | 43D | ||
| -*1 | 355 | 470/630 | - | - | S355 | 50A |
| S355JR *2 | 20 | 27 | S355JR | 50B | ||
| S355J0 | 0 | 27 | S355J0 | 50C | ||
| S355J2 | -20 | 27 | S355J2G3/G4 | 50D | ||
| S355K2 | -20 | 40 | S355J2G3/G4 | 50DD | ||
| E295 | 295 | 470/610 | - | - | E295 | - |
| S335 | 335 | 570/710 | - | - | S335 | - |
| E360 | 360 | 650/830 | - | - | E360 | - |
(1 MPa = 1 N/mm2)
1. For all products to be compliant with the EU Construction Products Directive (CPD 89/106/EC) the material must offer a guarenteed 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.
2. Verification of the specified impact value is only carried out when agreed at the time of the enquiry and order.
Comparison between grades in EN 10025: part 2 : 2004 & nearest equivalent versions in EN 10025 : 1993 and BS 4360 : 1990
| EN 10025 : part 3 : 2004 |
EN 10025 : part 2 : 1993 |
BS 4360 : 1990 | ||||
|---|---|---|---|---|---|---|
| Grade | Yield (Reh) min | Tensile (Rm) | Charpy V-notch longitudinal | Grade | Grade | |
| Strength at t = 16mm (MPa) | Temp (deg C) | Energy (J) t = 16mm |
||||
| S275N | 275 | 375/510 | -20 | 40 | S275N | 43DD |
| S275NL | -50 | 27 | S275NL | 43EE | ||
| S355N | 355 | 470/630 | -20 | 40 | S355 | 50 |
| S355NL | -50 | 27 | S355NL | 50EE | ||
| S420N | 420 | 520/680 | -20 | 40 | S420N | - |
| S420NL | -50 | 27 | S420NL | - | ||
| S460M | 480 | 550/720 | -20 | 40 | S460M | 55C |
| S460ML | -50 | 27 | S460ML | 55EE | ||
(1 MPa = 1 N/mm2)
1. 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.
2. Verification of the specified impact value is only carried out when agreed at the time of the enquiry and order.
Comparison between grades in EN 10025 : part 4 : 2004 & nearest equivalent versions in EN 10113 : part 3 : 1993
| EN 10025 : part 4 : 2004 |
EN 10025 : part 3 : 1993 |
||||
|---|---|---|---|---|---|
| Grade | Yield (Reh) min | Tensile (Rm) | Charpy V-notch longitudinal | Grade | |
| Strength at t = 16mm (MPa) | Temp (deg C) | Energy (J) t = 16mm |
|||
| S275M | 275 | 375/510 | -20 | 40 | S275N |
| S275ML | -50 | 27 | S275NL | ||
| S355M | 355 | 470/630 | -20 | 40 | S355 |
| S355ML | -50 | 27 | S355NL | ||
| S420M | 420 | 520/680 | -20 | 40 | S420N |
| S420ML | -50 | 27 | S420NL | ||
| S460M | 480 | 550/720 | -20 | 40 | S460M |
| S460ML | -50 | 27 | S460ML | ||
Comparison between grades in EN 10025: part 5 : 2004 and nearest equivalent versions in EN 10155 : 1993 and BS 4360 : 1990
| EN 10025 : part 5 : 2004 | EN 10155 : 1993 | BS 4360 : 1990 | ||||
|---|---|---|---|---|---|---|
| Grade | Yield (Reh) min | Tensile (Rm) | Charpy V-notch longitudinal | Grade | Grade | |
| Strength at t = 16mm (MPa) | Temp (deg C) | Energy (J) t = 16mm |
||||
| S235JOW | 235 | 360/510 | 0 |
27 |
S235JOW | - |
| S235J2W | -20 | 27 | S235J2W | - | ||
| S355JOWP | 355 | 470/630 | 0 | 27 | S355JOWP | WR50A |
| S355J2WP | -20 | 27 | S355J2WP | - | ||
| S355JOW | 355 | 470/630 | 0 | 27 | S355JOW | WR50B |
| S355J2W | -20 | 27 | S355J2W | WR50C | ||
| S355K2W | -20 | 40 | S355K2W | WR50D | ||
(1 MPa = 1 N/mm2)
| Charpy V-notch impact test (longitudinal) | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade |
Yield Stress N/mm² minimum |
Tensile Strength N/mm² |
Elongation on 5,65 √So % minimum |
Thickness mm |
Average energy J minimum |
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| Longitudinal | Transverse (See Note 3) |
||||||||||||||||||||||||||||||||
| A | 235 | 400 – 520 (see Note 1) m |
22 (see Note 2) |
- | - | - | |||||||||||||||||||||||||||
| B | ≤ 50 | 27 | 20 | ||||||||||||||||||||||||||||||
| D | > 50 ≤ 70 | 34 | 24 | ||||||||||||||||||||||||||||||
| E | > 70 ≤ 100 | 41 | 27 | ||||||||||||||||||||||||||||||
|
Impact tests are to be made on the various grades at the following temperatures: |
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|
NOTES
(1) Requirements for products over 50mm thick in Grades A, B and D and 100mm thick in Grade E are
subject to agreement.
(2) For full thickness tensile test specimens with a width of 25mm and a gauge length of 200mm (see
Fig. 2.2.4 in Chapter 2),
(3) Generally, tests need only be made in the longitudinal direction. For special applications, transverse test specimens may be required by the purchaser of LR. Transverse test results are to be guaranteed by the supplier. (4) Impact tests are not required for Grade A material up to 50mm thick, nor for thicknesses above 50mm when the material is produced using a fine grained practice and is also normalized or thermomechanically controlled rolled. (5) Impact tests are generally not required for Grade B steel of 25mm or less in thickness. However, the manufacturer should confirm, by way of regular in-house tests, and on occasional material selected by the Surveyor, that the material meets the above requirement. These results |
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NOTES
| Thickness mm | <5 |
>5 <10 |
>10 <15 |
>15 <20 |
>20 <25 |
>25 <30 |
>30 <40 |
>40 <50 |
>50 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Elongation % |
{ |
Strength level 32 Strength level 38 Strength level 40 |
to be specially agreed |
||||||||
| 14 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | ||||
| 13 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | ||||
| 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | ||||
NOTES
| Tolerances on the nominal thickness EN10029:1991 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Nominal thickness |
ClassA | ClassB | ClassC | ClassD | |||||||
| Lower | Upper | Lower | Upper | Lower | Upper | Lower | Upper | ||||
| ≥ 3 < 5 | -0,4 | +0,8 | -0,3 | +0,9 | 0 | +1,2 | -0,6 | +0,6 | |||
| ≥ 5 < 8 | -0,4 | +1,1 | -0,3 | +1,2 | 0 | +1,5 | -0,75 | +0,75 | |||
| ≥ 8 < 15 | -0,5 | +1,2 | -0,3 | +1,4 | 0 | +1,7 | -0,85 | +0,85 | |||
| ≥ 15 < 25 | -0,6 | +1,3 | -0,3 | +1,6 | 0 | +1,9 | -0,95 | +0,95 | |||
| ≥ 25 < 40 | -0,8 | +1,4 | -0,3 | +1,9 | 0 | +2,2 | -1.1 | +1,1 | |||
| ≥ 40 < 80 | -1,0 | +1,8 | -0,3 | +2,5 | 0 | +2,8 | -1,4 | +1,4 | |||
| ≥ 80 < 150 | -1,0 | +2,2 | -0,3 | +2,9 | 0 | +3,2 | -1,6 | +1,6 | |||
| ≥ 150 < 250 | -1,2 | +2,4 | -0,3 | +3,3 | 0 | +3,6 | -1.8 | +1,8 | |||
| Special tolerances for flatness EN10029:1991 | ||||
|---|---|---|---|---|
| Dimensions in mm Class N | ||||
| Nominal thickness | Steel type L (1) | Steel type H (1) | ||
| Measuring Length | ||||
| 1000 | 2000 | 1000 | 2000 | |
| ≥3<5 | 9 | 14 | 12 | 17 |
| ≥5<8 | 8 | 12 | 11 | 15 |
| ≥8<15 | 7 | 11 | 10 | 14 |
| ≥15<25 | 7 | 10 | 10 | 13 |
| ≥25<40 | 6 | 9 | 9 | 12 |
| ≥40<250 | 5 | 8 | 8 | 11 |
If the distance between the points of contact of the straight-edge and the plate is <1000 mm the permissible deviation from flatness shall comply with the following requirements:
For steel type L max. 1% or for steel type H max. 1,5% of the distance between points of contact on the plate between 300mm to 1000mm, but not exceeding the values given in table 4.
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