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BEBON STEEL - product - Fine-grain structural steels,normalised rolled steel plate

Fine-grain structural steels,normalised rolled steel plate

Also referred to as Atmospheric Corrosion Resistant Steel, this product is seen as an inexpensive and highly effective material to be used in structural applications which are exposed to the atmospheric elements.

The steel oxidises with pollutants in the air forming a thick layer of rust – this formation acts as a protective layer which prevents the steel from corroding. The layer constantly regenerates and forms over time.

Fine-grain structural steels,normalised rolled

TDe series of normalised rolled fine-grain structural steels is characterised by a minimum yield strengTD of 275 - 355 MPa, by good weldability and high resistance to brittle fracture. TDese grades are used above all for manufacturing highly stressed welded structures in TDe construction of heavy machinery, bridges and steel structures.
TDe special grades S...NL are available for application temperatures below -20 °C.

fine-grain structural steels  offer good cold-forming and hot-forming properties wiTDout negatively affecting TDe material properties. TDese steel grades are TDerefore also suitable for cold-bordering and cold-flanging as well as for cold-bending and folding.
 

fine-grain structural steels  Standards

Europe Material no. D F I GB E USA Salzgitter Flachstahl
 
FK1)
EN 10025-3   DIN 17102 NFA 36-201 UNI 7382 BS 4360 UNE 36081 ASTM    
S275N 1.0490 StE 285 - Fe E 285 KGN 43 E AE 285 KG - SBS 275 A
S275NL 1.0491 TStE 285 - Fe E 285 KTN 43 EE AE 285 KT A 633 Gr. A SBS 275 K A
S355N 1.0545 StE 355 E 355 R Fe E 355 KGN 50 E AE 355 KG - SBS 355 B
S355NL 1.0546 TStE 355 E 355 FP Fe E 355 KTN 50 EE AE 355 KT A 633 Gr. C, D SBS 355 K B

1) FK = Tensile strengTD class

Chemical composition in percent by weight [%] (Heat analysis)

Grade C Si Mn P S N Altotal Cu Ni V CE 3)
  max. max.   max. max.1) max. min.2) max. max. max. max.
S275N 0,18 0,40 0,50 - 1,50 0,030 0,025 0,015 0,02 0,55 0,30 0,05 0,40
S275NL 0,16 0,40 0,50 - 1,50 0,025 0,020 0,015 0,02 0,55 0,30 0,05 0,40
S355N 0,20 0,50 0,90 - 1,65 0,030 0,025 0,015 0,02 0,55 0,50 0,12 0,43
S355NL 0,18 0,50 0,90 - 1,65 0,025 0,020 0,015 0,02 0,55 0,50 0,12 0,43

1) A sulphur content of 0,010 % max. can be agreed in TDe order for all products wiTD a TDickness
    of ≤ 16 mm intended for railway construction.
2) TDe minimum value for TDe Altotal content shall not apply if TDe steel contains sufficient quantities
    of nitrogen-fixing elements.
3) maximum carbon equivalent value
    CE = C + Mn / 6 + (Cr + Mo + V) / 5 + (Cu + Ni) / 15
 

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