Properties

Weldable fine grain structural steels are in compliance with the EN 10025-4:2004 standard, which defines four levels of mechanical properties. Each grade can be obtained with guaranteed impact properties at -20°C (M grades), or for low-temperature applications at -50°C (ML grades).

 

Products that have undergone a Charpy test at -60°C in the transverse direction may be delivered after prior agreement.

Advantages

Weldable fine grain structural steels are thermomechanically rolled, which gives improved welding performance compared with equivalent normalised steels.

Applications

These steels are used for welded parts that have to withstand high levels of strain. Typical applications are bridges, pylons and other architectural structures.

 

Since 1 July 2013, the Construction Products Regulation (Regulation (EU) No. 305/2011 – CPR) has required that CE marking be affixed to all products delivered in accordance with a harmonised standard (e.g. EN 10025). This CE marking guarantees, for the uses defined in the standard, the properties described in the declaration of performance submitted by the manufacturer.

 

All of the steels in this data sheet comply with this Regulation.

 

The corresponding declarations of performance are available on our website at:

http://dop.arcelormittal.net/index.php

Brand correspondence

 EN 10025-4:2004EU 113-72SEW 083UNEN 10113-3:1993
S275M EN 10025-4 S275MFeE275 KG TM FeE275 KG TMS275M
S275ML EN 10025-4 S275MLFeE275 KT TM FeE275 KT TMS275ML
S355M EN 10025-4 S355MFeE355 KG TMStE 355 TMFeE355 KG TMS355M
S355ML EN 10025-4 S355MLFeE355 KT TMT StE 355 TMFeE355 KT TMS355ML
S420M EN 10025-4 S420MFeE420 KG TMStE 420 TM S420M
S420ML EN 10025-4 S420MLFeE420 KT TMT StE 420 TM S420ML
S460M EN 10025-4 S460MFeE460 KG TMStE 460 TMFeE460 KG TMS460M
S460ML EN 10025-4 S460MLFeE460 KT TMT StE 460 TMFeE460 KT TMS460ML

Dimensions

For the dimensions available, see the corresponding table in data sheet H99. Table A with a thickness range as indicated in the table below (Mechanical properties).

 

Tolerances are in accordance with EN 10029 (Class S or other, tighter tolerance ranges may be ordered after prior agreement).


Mechanical properties

 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A 5.65√So (%)
KV 20°C (J)
KV 0°C (J)
KV -10°C (J)
KV -20°C (J)
KV -30°C (J)
KV -40°C (J)
KV -50°C (J)
S275M EN 10025-4L5 - 60---≥ 55≥ 47≥ 43≥ 40---
T5 - 16≥ 275370 - 530≥ 24≥ 31≥ 27≥ 24≥ 20---
16 - 40≥ 265
40 - 60≥ 255360 - 520
S275ML EN 10025-4L5 - 40---≥ 63≥ 55≥ 51≥ 47≥ 40≥ 31≥ 27
T5 - 16≥ 275370 - 530≥ 24≥ 40≥ 34≥ 30≥ 27≥ 23≥ 20≥ 16
16 - 40≥ 265
S355M EN 10025-4L5 - 60---≥ 55≥ 47≥ 43≥ 40---
T5 - 16≥ 355470 - 630≥ 22≥ 31≥ 27≥ 24≥ 20---
16 - 40≥ 345
40 - 60≥ 335450 - 610
S355ML EN 10025-4L5 - 50---≥ 63≥ 55≥ 51≥ 47≥ 40≥ 31≥ 27
T5 - 16≥ 355470 - 630≥ 22≥ 40≥ 34≥ 30≥ 27≥ 23≥ 20≥ 16
16 - 40≥ 345
40 - 50≥ 335450 - 610
S420M EN 10025-4L5 - 40---≥ 55≥ 47≥ 43≥ 40---
T5 - 16≥ 420520 - 680≥ 19≥ 31≥ 27≥ 24≥ 20---
16 - 40≥ 400
S420ML EN 10025-4L5 - 40---≥ 63≥ 55≥ 51≥ 47≥ 40≥ 31≥ 27
T5 - 16≥ 420520 - 680≥ 19≥ 40≥ 34≥ 30≥ 27≥ 23≥ 20≥ 16
16 - 40≥ 400
S460M EN 10025-4L5 - 40---≥ 55≥ 47≥ 43≥ 40---
T5 - 16≥ 460540 - 720≥ 17≥ 31≥ 27≥ 24≥ 20---
16 - 40≥ 440
S460ML EN 10025-4L5 - 40---≥ 63≥ 55≥ 51≥ 47≥ 40≥ 31≥ 27
T5 - 16≥ 460540 - 720≥ 17≥ 40≥ 34≥ 30≥ 27≥ 23≥ 20≥ 16
16 - 40≥ 440

Transversal Charpy impact test performance is guaranteed only if specified on ordering.

Certification of multiple grades is available.

Certificates may refer to the different options of the standards regarding Charpy temperature and energy, Z test, hardness, PWHT, weld bend test, grain size.



Chemical composition

 
Thickness (mm)
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Cu (%)
Cr (%)
Ni (%)
Mo (%)
Nb (%)
V (%)
Ti (%)
N (%)
Ceq (%)
S275M EN 10025-45 - 40≤ 0.13≤ 1.50≤ 0.030≤ 0.025≤ 0.50≥ 0.020≤ 0.55≤ 0.30≤ 0.30≤ 0.10≤ 0.050≤ 0.08≤ 0.050≤ 0.015≤ 0.34
40 - 60≤ 0.35
S275ML EN 10025-45 - 40≤ 0.13≤ 1.50≤ 0.025≤ 0.020≤ 0.50≥ 0.020≤ 0.55≤ 0.30≤ 0.30≤ 0.10≤ 0.050≤ 0.08≤ 0.050≤ 0.015≤ 0.34
S355M EN 10025-45 - 40≤ 0.14≤ 1.60≤ 0.030≤ 0.025≤ 0.50≥ 0.020≤ 0.55≤ 0.30≤ 0.50≤ 0.10≤ 0.050≤ 0.10≤ 0.050≤ 0.015≤ 0.39
40 - 60≤ 0.40
S355ML EN 10025-45 - 40≤ 0.14≤ 1.60≤ 0.025≤ 0.020≤ 0.50≥ 0.020≤ 0.55≤ 0.30≤ 0.50≤ 0.10≤ 0.050≤ 0.10≤ 0.050≤ 0.015≤ 0.39
40 - 50≤ 0.40
S420M EN 10025-45 - 16≤ 0.16≤ 1.70≤ 0.030≤ 0.025≤ 0.50≥ 0.020≤ 0.55≤ 0.30≤ 0.80≤ 0.20≤ 0.050≤ 0.12≤ 0.050≤ 0.025≤ 0.43
16 - 40≤ 0.45
S420ML EN 10025-45 - 16≤ 0.16≤ 1.70≤ 0.025≤ 0.020≤ 0.50≥ 0.020≤ 0.55≤ 0.30≤ 0.80≤ 0.20≤ 0.050≤ 0.12≤ 0.050≤ 0.025≤ 0.43
16 - 40≤ 0.45
S460M EN 10025-45 - 16≤ 0.16≤ 1.70≤ 0.030≤ 0.025≤ 0.60≥ 0.020≤ 0.55≤ 0.30≤ 0.80≤ 0.20≤ 0.050≤ 0.12≤ 0.050≤ 0.025≤ 0.45
16 - 40≤ 0.46
S460ML EN 10025-45 - 16≤ 0.16≤ 1.70≤ 0.025≤ 0.020≤ 0.60≥ 0.020≤ 0.55≤ 0.30≤ 0.80≤ 0.20≤ 0.050≤ 0.12≤ 0.050≤ 0.025≤ 0.45
16 - 40≤ 0.46

The above chemical properties are based on cast analysis data. Product analysis and Ceq may be confirmed by certificate 3.1 or 3.2 in accordance with EN 10204.



For commercial information (quotations, deliveries, product availability):

For technical questions about these products: flateurope.technical.assistance@arcelormittal.com


All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.