Forterior


 

​Higher Strength for Higher Performance

When looking beyond Vallourec's family of standard high-strength steels for mechanical engineering applications, Forterior® is the first option you might consider. It has a higher yield strength (between 370 and 500 MPa, depending on the steel grade) and good impact test values guaranteed up to -20° C. The Forterior series consists of six grades with specific mechanical properties (see table below) and outstanding weldability.

 

Applications

Forterior® grades support the design of weight-optimized structures without compromising on performance. This means less material and thus lighter structures, or enhanced performance with the same total structure weight. Popular applications for Forterior® are e.g. highly stressed frame structures for agricultural machinery.

 

Chemical composition (in % by mass)​ ​
​Steel grade C max. ​Si ​Mn ​P max. ​S max. ​V + Nb max.
​Forterior® 400 ​0.20 ​0.10 to 0.45 1.15 to 1.70 ​0.030 ​0.025 ​0.16
​Forterior® 370 ImpactFIT 20 ​0.20 ​​0.10 to 0.45 ​​1.15 to 1.70 ​0.030 ​0.025 ​0.16
​Forterior® 450 ​0.22 ​0.10 to 0.50 ​1.20 to 1.70 ​0.030 ​0.025 ​0.17
​Forterior® 430 ImpactFIT 20 ​0.22 ​​0.10 to 0.50 ​​1.20 to 1.70 ​0.030 ​0.025 ​0.17
​Forterior® 500 ​0.221) ​​0.10 to 0.50 ​1.30 to 1.70 ​0.030 ​0.025 ​0.21
​Forterior® 460 ImpactFIT 20 ​0.221) ​​0.10 to 0.50 ​​1.30 to 1.70 ​0.030 ​0.025 ​0.21

 1) Applies for wallthicknesses T > 12 mm: C = max. 0.23 %.

 

​Mechanical properties
​Steel grade​ ​Delivery condition1) ​Yield strength
ReH min in MPa2)
​Tensile strength Rm in MPa2) ​Elongation Amin in %
longitudinal
​Min. average absorbed energy KV min. at given test temperature
​Forterior® 400 ​AR ​400 ​510 ​19 ​-
​Forterior® 370
ImpactFIT 20
​N ​370 510 20 ​27 J at -20 °C
​Forterior® 450 ​AR ​450 560 ​18 -
​Forterior® 430
ImpactFIT 20
N ​430 560 19 27 J at -20 °C
​Forterior® 500 AR ​500 610 ​17 ​-
​Forterior® 460
ImpactFIT 20
​N ​460 610 19 ​27 J at -20 °C

1) AR: As rolled; N: normalized or normalizing formed.
2) Values apply for the lowest wall thickness range defined in Vallourec materials datasheets. Please contact us for further information.

 

Find out more

Yellow Goods

Agricultural Machinery

Frames/Cages