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BEBON STEEL - product - Steel for gas cylinders and gas vessels steel plate

Steel for gas cylinders and gas vessels 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.

Steel for gas cylinders and gas vessels 

steel for gas cylinders and gas vessels

Usage

These steel grades are characterised by a minimum yield strength of 245 - 355 MPa and by good weldability. The user of these steel grades must make sure that his calculation, design and processing methods are appropriate for the material. The steel grades of this series are used for manufacturing gas cylinders by welding cold-formed parts together and normalizing the finished cylinder.

Standards

EN 10120   DIN 17155 NFA 36-211 UNI 7355 BS 5045 JIS G 3116  
P245NB 1.0111 H I BS 1 Fe E 24 KR Type A SG 255 A
P265NB 1.0423 H II BS 2 Fe E 27 KR Type B SG 295 A
P310NB 1.0437 17 Mn 4 BS 3 Fe E 31 KR Type C SG 325 B
P355NB 1.0557 19 Mn 6 BS 4 Fe E 35 KR Type E SG 365 B



1) FK = Tensile strength class

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

  max. max. min. max. max. max. min. max. max.
P245NB 0,16 0,25 0,30 0,025 0,015 0,009 0,020 0,03 0,050
P265NB 0,19 0,25 0,40 0,025 0,015 0,009 0,020 0,03 0,050
P310NB 0,20 0,50 0,70 0,025 0,015 0,009 0,020 0,03 0,050
P355NB 0,20 0,50 0,70 0,025 0,015 0,009 0,020 0,03 0,050



1) The aluminium content may in part be replaced by ≤ 0,050 % Nb and /or ≤ 0,03 % Ti.
2) With a ratio of Altotal / N ≥ 2,2 or if Nb or Ti are added, the nitrogen content
    may be ≤ 0,012 %.

Mechanical properties1)

Min. total elongation [%]
  MPa MPa L0 = 80 mm L0 = 5,65 √S0
      e2) < 3 e2) ≥ 3
P245NB 245 360 - 450 26 34
P265NB 265 410 - 500 24 32
P310NB 310 460 - 550 21 28
P355NB 355 510 - 620 19 24


1) Transverse samples
2) Nominal thickness e [mm]

Welding

The steel grades of the P245NB - P355NB series may be welded using the usual welding techniques.

Condition of delivery, scope of testing and certificate

The provisions of EN 10120 shall apply for delivery and inspection.

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