Properties

This range of steels is in compliance with EN 10149-2:2013. They are commonly referred to as high strength low alloy steels (HSLA). 

All the grades are micro-alloyed steels with a low carbon content and are characterised by guaranteed minimum yield strength, controlled metallurgical purity and a fine grain structure.

Advantages

High strength low alloy steels combine excellent mechanical properties, such as durability, fatigue resistance and impact resistance, with good formability and weldability. They are an excellent choice where weight reduction is a priority. Because of their high yield strength, they are frequently used as an alternative to structural steels.

Applications

High strength low alloy steels are mainly used in the construction of bridges, containers, pylons and other architectural structures.

Brand correspondence

 EN 10149-2:2013SEW 092:1990NFA 36-231:1992BS 1449EU 149-2:1980SS
S315MC EN 10149-2 S315MCQStE300TME315 D43F35  
S355MC EN 10149-2 S355MCQStE360TME355 D46F40Fe E 355-TM42-00
S420MC EN 10149-2 S420MCQStE420TME420 D(50F45)Fe E 420-TM52-00
S460MC EN 10149-2 S460MC     
S500MC EN 10149-2 S500MC     
() Closest grade as no fully equivalent grade exists.

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)
S315MC EN 10149-2L6 - 20≥ 315390 - 510≥ 24-
S355MC EN 10149-2L6 - 20≥ 355430 - 550≥ 23-
T6 - 20---≥ 0.5
S420MC EN 10149-2L6 - 20≥ 420480 - 620≥ 19-
T6 - 20---≥ 0.5
S460MC EN 10149-2L6 - 20≥ 460520 - 670≥ 17-
T6 - 20---≥ 1
S500MC EN 10149-2L6 - 16≥ 500550 - 700≥ 14-
T6 - 16---≥ 1

All mechanical properties are guaranteed in thermomechanically rolled condition.



Chemical composition

 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
V (%)
Ti (%)
S315MC EN 10149-2≤ 0.12≤ 1.30≤ 0.025≤ 0.020≤ 0.50≥ 0.015≤ 0.090≤ 0.20≤ 0.150
S355MC EN 10149-2≤ 0.12≤ 1.50≤ 0.025≤ 0.020≤ 0.50≥ 0.015≤ 0.090≤ 0.20≤ 0.150
S420MC EN 10149-2≤ 0.12≤ 1.60≤ 0.025≤ 0.015≤ 0.50≥ 0.015≤ 0.090≤ 0.20≤ 0.150
S460MC EN 10149-2≤ 0.12≤ 1.60≤ 0.025≤ 0.015≤ 0.50≥ 0.015≤ 0.090≤ 0.20≤ 0.150
S500MC EN 10149-2≤ 0.12≤ 1.70≤ 0.025≤ 0.015≤ 0.50≥ 0.015≤ 0.090≤ 0.20≤ 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.