Steel for pressure vessels

Our structural steel for pressure vessels delivers excellent impact toughness and weldability.

Special grades offer guaranteed strength levels at temperatures up to 400°C and steels compliant with EN 10207 and/or EN 10028 for the manufacture of simple pressure vessels.

Product specification
Steel for pressure vessels is currently available in the following grades:

EN-Engineering-Product-Hot-Rolled-Pressure vessels-P235GH TSN

Specification details for P235GH

EN-EngineeringAutomotive-Product-Hot-rolled-All Grades Surface aspects Supply Conditions TSE

Supply Conditions

Supply - product conditions

Hot-rolled steel can be supplied with these product conditions and finishes and with this surface treatment:

Side/surface condition non-pickled pickled pickled and oiled
Mill edges Yes Yes Yes
Trimmed edges - Yes Yes
Trimmed edges available in thicknesses up to 8.0 mm.
Please contact us regarding other specifications we may have that meet your needs.

Surface aspects

Description Availability
Surface finish Coils are available in non-pickled and pickled finish for most grades. 
For grade specific availability, please refer to the dimensional tables.
Oiling Pickled finish is available with rolling
or preservative oil applied. 
Oil weight normally 0.5-2.5 g/m2
Alternative oiling ranges are available.
Please contact us for details.


Test certificates 2.2/3.1 are available according to EN 10204.         

EN-Engineering-Product-Hot-Rolled-Pressure vessels-P235GH-Properties


Mechanical Properties

The values shown for strength and elongation in the table below are for test pieces taken transverse to the rolling direction; those for the impact test are for test pieces taken in the rolling direction.

EN 10028-2: 2009 Grade P235GH
Min. yield strength  ReH (N/mm2) 235
    360 - 480
Tensile strength  Rm (N/mm2)  
Elongation % 24
Impact stength 2 Temp. °C -20
  Min. energy J 27
1. Upper yield strength or 0.2% proof stress applies.
2. Impact strengths apply to thicknesses > 6 mm and are for standard test pieces only. Please contact us for details.
Elongation after fracture A uses test piece length L0 = 5.65√S0.
t – material thickness in mm.

Chemical composition

Structural steel meets the requirements of the cast analysis in the standard, as shown in the table below.

The steel grades supplied by Tata Steel are always fully killed.
Tata Steel does not supply steel with increased copper content.

  Grade P235GH
C Max. 0.16
Mn Min. - Max. 0.601 - 1.20
P Max. 0.025
S Max. 0.010
Si Max. 0.350
Altot Min. 0.020
Nb Max. 0.020
Ti Max. 0.030
V Max. 0.020
1. For product thicknesses < 6 mm, a minimum manganese content of 0.20 % lower than specified is permitted.
All values are in weight%.
Tata Steel does not use Cr, Cu, Mo or Ni as alloying elements for these specific steel grades.

EN-Engineering-Product-Hot-Rolled-Pressure vessels-P235GH-Dimensions


Dimensional capability - non-pickled

Dimensions in mm.

Thickness Max. width
From - up to P235GH
3.00 - 10.00 2070
The minimum width is 1000 mm.
Widths smaller than 1000 mm are available on request - please contact us.

Dimensional capability - pickled

Dimensions in mm.

Thickness Max. width
From - up to P235GH
3.00 - 4.83 2070
4.83 - 5.00 2000
5.00 - 5.25 1900
5.25 - 5.50 1820
5.50 - 5.80 1720
5.80 - 6.35 1570
6.35 - 10.00 -
10.00 - 12.70 -
The minimum width is 1000 mm.
Widths smaller than 1000 mm are available on request - please contact us.


Tolerances for wide strip and slit wide strip comply with standard EN 10051: 2010.

Tighter tolerances are available, please contact us.


EN-EngineeringAutomotive-Product-Hot-rolled-All grades Shape and dimensional tolerances TSE

Shape and dimensional tolerances

Shape and dimensional tolerances

The specified values for wide strip do not apply to the uncropped ends of the coil (‘head’ and ‘tail’). The length of these uncropped ends is calculated using the following formula:

length (in metres) = 90/nominal thickness (in mm), with a maximum of 20 metres.

If required, this part of the coil can be removed, however an additional cost may be charged for this.


Tolerances on thickness

Tata Steel can supply to full thickness tolerance specified in EN 10051:2010.

Tighter tolerances are available as shown below:

Product type Thickness tolerances available
  (% of full EN 10051:2010 tolerance)