Properties

These grades are manufactured to the highest quality standards in order to meet the most stringent specifications for use in welded tubes and pipes. The reference standard is API 5L (American Petroleum Institute).

Specific requirements such as HIC (hydrogen-induced cracking) resistance or high ductility at low temperature can also be guaranteed.

Advantages

These grades have very high tensile strength and toughness at very low temperatures. Furthermore, they offer excellent weldability because of their exceptionally low carbon equivalent value.

Applications

These steels are used to manufacture pipes for the transport of gaseous or liquid materials such as water or oil.

Chemical composition

The chemical properties specified are in accordance with the requirements of API 5L for PSL2-type pipes; other properties are available on request.

Brand correspondence

 
A AM FCE
B AM FCE
X42 AM FCE
X46 AM FCE
X52 AM FCE
X56 AM FCE
X60 AM FCE
X65 AM FCE
X70 AM FCE

Dimensions

The dimensional options are shown in Table C of data sheet H99.
Thickness is limited to 30 mm for grades X60, X65, X70.
For other formats, please contact us.


Mechanical properties

 
Direction
Thickness (mm)
As delivered
HIC
A AM FCET5 - 140≥ ARX
B AM FCET5 - 140≥ ARX
X42 AM FCET5 - 50≥ TMX
X46 AM FCET5 - 50≥ TMX
X52 AM FCET10 - 50≥ TMX
X56 AM FCET10 - 50≥ TM-
X60 AM FCET10 - 30≥ TM-
X65 AM FCET10 - 30≥ TM-
X70 AM FCET10 - 30≥ TM-

 

The mechanical properties of the pipes will depend on:

  • The Bauschinger effect, which in turn depends on:
    • The grade and chemical composition of the steel
    • The type of pipe (ERW or SAW)
    • The type of pipe manufacturing line
  • The post-treatment (full-body post-heating/stress relieving post-heating) that is sometimes performed by the client
  • The angle of the weld on spiral tubes (this will influence the direction of the tensile test with respect to the rolling direction)

 

The evolution of the mechanical properties - and in particular of the difference in yield strength between the sheet and the pipe - is specific for each process. It is therefore very important to indicate both the forming and the welding process as well as the aforementioned sheet/pipe difference. An agreement between ArcelorMittal and the client on the mechanical properties to be guaranteed must be reached prior to the delivery.

 

The mechanical properties specified, in the thickness ranges proposed and supplied as described, enable the requirements of API 5L PSL2 standard to be met on the finished pipe.

 

Supplied as:

  • AR: As Rolled
  • N: Normalised or equivalent
  • TM: Thermomechanically rolled

 

HIC: According to NACE-STD-TM-0284

X: Possible on request



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.