Properties

These grades comply with the EN 10149-3:2013 standard, which describes normalised or normalised rolled steels.

Normalised or normalised rolled steels are characterised by a guaranteed minimum yield strength, controlled metallurgical purity and a fine grain structure.

Advantages

Like the corresponding grades obtained by thermomechanical rolling, normalised or normalised rolled steels combine excellent mechanical properties, such as high strength, fatigue resistance and toughness, with good formability. Their higher carbon content may affect their weldability. Nevertheless, these grades meet the specifications for normalised steel.

Applications

Normalised or normalised rolled steels are mainly used for the construction of bridges, containers, pylons and other architectural structures.

Available options

Options available (after prior agreement):

Brand correspondence

 EN 10149-3:2013EU 149-2:1980SEW 92:1975BS
S260NC EN 10149-3 S260NC QStE 260 N 
S315NC EN 10149-3 S315NC QStE 300 N40/30
S355NC EN 10149-3 S355NCFe E 355-TDQStE 360 N43/35
S420NC EN 10149-3 S420NCFe E 420-TDQStE 420 N 

Dimensions

For the dimensions available, see Table A in data sheet H99 within the limits of the scope of the standard (maximum thickness 20 mm).


Mechanical properties

 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A 5.65√So (%)
Bending ratio (th)
S260NC EN 10149-3T5 - 20≥ 260370 - 490≥ 30≥ 0
S315NC EN 10149-3T5 - 20≥ 315430 - 550≥ 270.5
S355NC EN 10149-3T5 - 20≥ 355470 - 610≥ 250.5
S420NC EN 10149-3T5 - 20≥ 420530 - 670≥ 230.5

All mechanical properties are guaranteed in normalised or normalised rolled steels.



Chemical composition

 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
V (%)
Ti (%)
S260NC EN 10149-3≤ 0.16≤ 1.20≤ 0.025≤ 0.020≤ 0.50≥ 0.015≤ 0.090≤ 0.10≤ 0.150
S315NC EN 10149-3≤ 0.16≤ 1.40≤ 0.025≤ 0.020≤ 0.50≥ 0.015≤ 0.090≤ 0.10≤ 0.150
S355NC EN 10149-3≤ 0.18≤ 1.60≤ 0.025≤ 0.015≤ 0.50≥ 0.015≤ 0.090≤ 0.10≤ 0.150
S420NC EN 10149-3≤ 0.20≤ 1.60≤ 0.025≤ 0.015≤ 0.50≥ 0.015≤ 0.090≤ 0.10≤ 0.150

The above chemical properties are based on cast analysis data.
The total Nb, V and Ti content should not exceed 0.22%.



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.