FineXcell


 

​​High-Tech Tubes for Extreme Performance

FineXcell® is Vallourec's most advanced series of high-strength fine-grain steels, providing the perfect combination of properties for use in the most demanding yet cost-effective steel structures. Meticulously controlled chemical compositions and advanced heat treatment methods plus the comprehensive know-how and expertise of Vallourec are the prerequisites for achieving a homogeneous fine-grained microstructure which, in turn, permits the combination of three important yet difficult to reconcile properties: high strength, good impact toughness and excellent weldability.

 

Applications

FineXcell® grades can achieve yield strength levels up to an impressive 1000 MPa. Innovative crane construction, weight-optimized load-bearing structures and other high-tech steel components under particularly high stresses are therefore the ideal application areas for FineXcell®.

 

Chemical composition (in % by mass)​
​Steel grade C ​Si Mn ​P max. ​S max. ​Cr ​Mo ​Ni max. ​N max. ​V ​Al ​Cu max. ​Nb max. Ti max.
​FineXcell® 690
ImpactFIT 50
​max. 0.20 max. ​0.60 ​​max. 1.70 0.025 0.015 max. 1.50 max. 0.70 1.50 0.020 max. 0.14 ​max. 0.060 ​0.50 2) 0.05 0.05
​​FineXcell® 770
ImpactFIT 50
​0.14 to 0.18 ​​0.20 to 0.50 1.20 to 1.70 ​0.025 0.015 max. 0.80 ​0.20 to 0.40 0.40 ​0.020 0.05 to 0.12 ​0.015 to 0.050 ​​0.25 0.05 0.05
​​FineXcell® 890
ImpactFIT 50
max. 0.18 ​​max. 0.50 ​​​max. 1.50 0.020 0.010 max. 0.90 max. ​0.50 0.40 0.020 max. 0.08 ​​max. 0.050 ​0.35 0.06 0.05
​​FineXcell® 960
ImpactFIT 501)
​max. 0.20 ​​max. 0.50 ​​​1.20 to 1.70 0.020 0.010 0.40 to 1.00 ​0.30 to 1.00 0.40 0.025 max. 0.20 ​​ 0.40 0.050 0.030

1) Other elements: W = 0.40 % to 1.50 %
2) If Cu > 0.30 %, Ni has to be at least half of Cu.

 

​Mechanical properties
​Steel grade​ ​Delivery condition1) ​Yield strength
ReH min in MPa2)
​Tensile strength Rm in MPa2) ​Elongation
Amin in %
​Min. average absorbed energy KV in J
long. transv.
​FineXcell® 690
ImpactFIT 50
​QT 690 ​700 - 960 ​14 ​12 ​27 at -50 °C
​FineXcell® 770
ImpactFIT 50
QT ​770 ​820 - 1000 ​15 ​13 ​27 at -50 °C
​FineXcell® 890
ImpactFIT 50
QT​ ​890 960 - 1110 ​14 ​12 ​27 at -50 °C
​FineXcell® 960
ImpactFIT 50
​QT ​960 980 - 1150 ​10 ​- ​27 at -50 °C

1) QT: quenched and tempered.
2) Valid for the smallest wall thickness range given in the respective material data sheets.

 

Find out more

Yellow Goods

Subsea Structures

Frames/Cages