Skip Navigation

Ferritic-bainitc-phase steel

Hot-rolled FB-W® ferritic-bainitic for chassis parts

Hot-rolled FB-W® ferritic-bainitic steels by thyssenkrupp Steel are modern, multi-phase steels which exhibit minimum tensile strengths of 450 and 580 MPa in the thermomechanically rolled state. Their good dynamic behavior makes them ideal for vibration-exposed parts.

Ferritic-bainitic steels have a very fine microstructure, which combines high strength with good cold working and welding capabilities. They are particularly suitable for the production of cold-worked automotive components such as profiles, body reinforcements, wheels and chassis parts. Two steel grades FB-W® 300Y450T and FB-W® 460Y580T are available.

thyssenkrupp supplies the following steel grades as per the product information or the reference steel grades in accordance with the respective standards.

Ferritic-bainitc-phase steel

SURFACE FINISHING
Steel grade designation Reference grade
DIN EN 10338, 10346
Reference grade
VDA 239-100
-/UC Z/GI ZF/GA ZM
FB-W® 300Y450T HDT450F HR300Y450T-FB
FB-W® 460Y580T HDT580F HR440Y580T-FB

-/UC: Uncoated
Z/GI: Hot-dip galvanized
ZF/GA: Galvannealed
ZM: ZM Ecoprotect®

Material characteristics

Typical microstructure of ferritic-bainitic steel with nital.
Typical microstructure of ferritic-bainitic steel with nital.

Due to the selected chemical composition and the special rolling process, ferritic-bainitic phase steels have a very fine microstructure. The matching microstructure components of ferrite and bainite offer a particularly attractive combination of high strength plus good cold workability and weldability.

Downloads

  • Product information FB-W® 300Y450T

  • Product information FB-W® 460Y580T

  • Advanced high-strength steels (Overview)

Contact

thyssenkrupp Steel Europe AG

Kaiser-Wilhelm-Strasse 100

47166 Duisburg, Germany

+49 (0)203 52-0

To the top