Steel Division

Thermomechanically rolled fine-grained structural steel plates

We supply thermomechanically rolled heavy plates made of fine-grained steels with minimum yield strengths ranging from 355 to 550 MPa with exceptional toughness and the best welding and forming properties.

As a special high-quality voestalpine grade, alform® steels are found in structural steel work, bridges, pressure pipes and in vehicle and crane manufacturing.

Our thermomechanically rolled fine-grained steels are characterized by a high degree of toughness and excellent weldability. The low degree of cold cracking and high degree of toughness in the welding seam lead to a high degree of safety in welded structures.

Utilization of the higher yield strength in the high-strength fine-grained steels (alform plate 420 M, 460M, 500 M und 550 M), as opposed to the conventional S355, results in thinner cross sections that lead to cost savings through light-weight components and thus to less expensive transportation, assembly and foundations. Savings are also achieved in component manufacturing, particularly in welding.

Steel grades

Special voestalpine grade

alform plate 355 M

alform plate 420 M

alform plate 460 M

alform plate 500 M

alform plate 550 M

Fine-grained structural steels, thermomechanically

rolled in accordance with EN 10025-4

S355M, ML

S420M, ML

S460M, ML


Plate thickness

8–100 mm for special voestalpine grade alform plate 355 M, alform plate 420 M and alform plate 460 M

8–80 mm for special voestalpine grade alform plate 500 M and alform plate 550 M

8–100 mm for S355, S420, S460 M, ML

Plate width

3,800 mm max. (dependent on thickness and steel grade)

Plate length

18,700 mm max. (dependent on thickness and steel grade; up to 24,000 mm max. available upon request)

Ordered weight 

At least 20.0 tons per line item

Unit weight

20.0 tons max. per single plate





Go to Website



alform® ist ein warmgewalzter, hochfester TM-Stahl mit bester Schweißeignung und steht damit für höchste Bauteilsicherheit.

Go to Website