Heavy plates

Flat Products

S355 Structural steel grades

Structural steels are mainly used in building and civil engineering applications.

Technical information

S355 Structural steel grades are carbon-manganese steels with guaranteed minimum mechanical properties (yield strength and tensile strength) and with satisfactory ductility.

Structural steels offer good weldability with all conventional welding processes. In addition to their excellent mechanical properties, structural steels have satisfactory toughness values, especially with +N or +M.

Delivery conditions:

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. 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 description comply with this regulation.


Technical information

  • Dimensions up to 150mm & 3300mm
  • Plate weight up to 15t (18t with mill acceptance)
  • Steel grades range from S235 to S460 corresponding to European standards
  • Grades corresponding to ASTM or ASME are also available
  • Other options are available on demand such as chemical adjustment to improve CEV, transverse impact testing, improved deformation properties perpendicular to the surface of the product as per EN 10164 (Z test), and ultrasonic testing

Wide range of carbon and weathering steel grades

ArcelorMittal Europe Flat products is one of the key leaders in Europe for heavy plates (quarto plates) with one of the most extensive offers in:

  • Steel grade capabilities covering almost the entire range of applications in building, civil engineering, and offshore and renewable energy
  • Dimensions and weight
  • Geographical coverage thanks to the mill located in Gijon (Spain)

The product range from the mill includes:

  • Structural steels
  • High yield strength steels for cold forming - thermomechanical steels
  • High yield strength steels for cold forming - normalised or normalised rolled steels
  • Steels with improved atmospheric corrosion resistance - Indaten®
  • Weldable fine grain structural steels - thermomechanical rolled steels
  • Weldable fine grain structural steels - normalised or normalised rolled steels
  • Weldable structural steels for fixed offshore structures
  • Steels for shipbuilding
  • Steels for pipes
  • Steels for pressure vessels and boilers

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 for structural steel). This CE marking guarantees the properties described in the declaration of performance submitted by the manufacturer for the uses defined in the standard.

Mechanical properties:

EN Standard
Designation Direction Thickness Re Rm A 5.65√So KV 20°C KV 0°C KV -10°C KV -20°C KV -30°C KV -40°C
KV -50°C
  EN 10027-1 EN 10027-2   (mm) (MPa) (MPa) (%) (J) (J) (J) (J) (J)  (J) (J)
EN 10025-2 S355                     L 5-120         JR J0    J2                                                    
≥27 27 ≥27
                  K2
≥40
T 5-16 ≥355 470-630 ≥20                            
16-40 ≥345
40-63 ≥335 ≥19
63-80 ≥325 ≥18
80-100 ≥315
100-120 ≥295 450-600
EN 10025-3 S355N 1.0545 L 5-120 - - - ≥55 ≥47 ≥43 ≥40
T 5-16 ≥355 470-630 ≥22 ≥31 ≥27 ≥24 ≥20
16-40 ≥345
40-63 ≥335
63-80 ≥325 ≥21
80-100 ≥315
100-120 ≥295 450-600
S355NL 1.0546 L 5-100 - - - ≥63 ≥55 ≥51 ≥47 ≥40 ≥31 ≥27
T 5-16 470-630 ≥22 ≥40 ≥40 ≥34 ≥30 ≥27 ≥23 ≥20 ≥16
16-40
40-63
63-80 ≥21
80-100
EN 10025-4 S355M 1.8823 L 5-60  - - -  ≥55 ≥47 ≥43 ≥40       
T 5-16 ≥355 470-630  ≥22  ≥31 ≥27 ≥24 ≥20
16-40 ≥345
40-60 ≥335 450-610
S355M 1.8834 L 5-50 - - - ≥63 ≥55 ≥51 ≥47 ≥40 ≥31 ≥27
T 5-16 ≥355 470-630 ≥22 ≥40 ≥34 ≥30 ≥27 ≥23 ≥20 ≥16
16-40 ≥345
40-50 ≥335 450-610

 

Chemical properties:

EN Standard Designation  Thickness  C (%) Mn (%) P (%)  S (%) Si (%) Al (%) Cu (%) Cr (%) Ni (%) Nb (%) V (%) Ti (%) N (%) Ceq (%) Mo (%)
   EN 10027-1 EN 10027-2  (mm)                
EN 10025-2  S355JR 1.0045 5-30 ≤0.24 ≤0.16 ≤0.035 ≤0.035 ≤0.55   ≤0.55           ≤0.012 ≤0.45  
30-120                           ≤0.47  
S355J0 1.0553 5-30 ≤0.20 ≤0.16 ≤0.030 ≤0.030 ≤0.55   ≤0.55           ≤0.012 ≤0.45  
30-120 ≤0.22                         ≤0.47  
S355J2+N 1.0577 5-30 ≤0.20 ≤0.16 ≤0.025 ≤0.025 ≤0.55   ≤0.55           - ≤0.45  
30-120 ≤0.22                         ≤0.47  
S355J2 1.0577 5-30 ≤0.20 ≤0.16 ≤0.025 ≤0.025 ≤0.55   ≤0.55           - ≤0.45  
30-120 ≤0.22                         ≤0.47  
S355K2+N 1.0596 5-30 ≤0.20 ≤0.16 ≤0.025 ≤0.025 ≤0.55   ≤0.55           - ≤0.45  
30-120 ≤0.22                         ≤0.47  
S255K2 1.0596 5-30 ≤0.20 ≤0.16 ≤0.025 ≤0.025 ≤0.55   ≤0.55           - ≤0.45  
30-120 ≤0.22                         ≤0.47  
EN 10025-2 S355N 1.0545 5-63 ≤0.20 0.90-1.65 ≤0.030 ≤0.025 ≤0.50 ≥0.020 ≤0.55 ≤0.30 ≤0.50 ≤0.050 ≤0.12 ≤0.050 ≤0.015 ≤0.43 ≤0.10
63-120                           ≤0.43  
S355NL 1.0546 5-63 ≤0.18 0.90-1.65 ≤0.025 ≤0.020 ≤0.50 ≥0.020 ≤0.55 ≤0.30 ≤0.50 ≤0.050 ≤0.12 ≤0.050 ≤0.015 ≤0.43 ≤0.10
63-120                           ≤0.43  
EN 10025-2 S355M 1.8823 5-40 ≤0.14 ≤1.60 ≤0.030 ≤0.025 ≤0.50 ≥0.020 ≤0.55 ≤0.30 ≤0.50 ≤0.050 ≤0.10 ≤0.050 ≤0.015 ≤0.39 ≤0.10
40-60                           ≤0.40  
S355ML 1.8834 5-40 ≤0.14 ≤1.60 ≤0.025 ≤0.020 ≤0.50 ≥0.020 ≤0.55 ≤0.30 ≤0.50 ≤0.050 ≤0.10 ≤0.050 ≤0.015 ≤0.39 ≤0.10
40-50                           ≤0.40  

 

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