Steel Division


Areas of application

Our high-strength, water-quenched aldur® steels are used wherever weight savings and operating safety are in demand at low temperatures. Examples are welded structures under high levels of stress in crane and vehicle construction, in mining equipment and pressure piping. We also supply hot-formed chords for jack-up rigs and lift boats in offshore applications.




  • Weight savings are achieved through high strength in conventional structural steels that lead to higher useful loads in crane and vehicle construction and less expensive structures. 
  • Excellent weldability results from low C equivalents with high cold cracking resistance in the heat-affected zone, lower preheating temperatures. High levels of component safety are achieved by toughness in the welded joint.


 Steel grades: Special voestalpine grade 

  • aldur 500 Q, QL, QL1 
  • aldur 550 Q, QL, QL1 
  • aldur 620 Q, QL, QL1 
  • aldur 700 Q, QL, QL1 
  • aldur 900 Q, QL 
  • aldur 960 Q, QL 

Dimensions: Plate thickness: 

  • for aldur 500-700 Q, QL, QL1:12-110 mm 
  • for aldur 900 Q, QL:30-60 mm 
  • for aldur 960 Q, QL:30-50 mm 

Plate width: 

  • for aldur 500 and 550 Q, QL, QL1:3,800 mm max. 
  • for aldur 620 and 700 Q, QL, QL1:3,000 mm max. for d = 12–20 mm3,800 mm max. for d = 20–100 mm 
  • for aldur 900 and 960 Q, QL:2,500 mm max. 

Plate length: 

  • 13,200 mm max. for aldur 700 Q, QL, QL1 16,000 mm max. for d = 12-30 mm 
 Ordered weight: 
  •  At least 20 tons per line item Unit weight: 14.8 tons max. per single plate 

Toughness: Three grade categories are available: 

  • Base grade Q    –20 °C (Design temperature)
  • Cryogenic grade QL    –40 °C 
  • Special cryogenic grade QL1    –60 °C


Contact Person

Steel trade

Steel trade

From standard to special grades, voestalpine is your contact for all the steel grades required in steel trade.

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Steel trade

Trade in all types of steel

A single source for all required steel grades. voestalpine offers standard and special grades for the steel trade. voestalpine offers standard and special grades for the steel trade.

Steel made to measure

voestalpine Steel & Service Center is one of the largest steel service centers in Europe. Highly innovative mechanical equipment enables products in widths, thicknesses and designs not otherwise available. Direct access to production makes distances shorter and processes more efficient.

High-quality appearance for longer

Even after longer storage periods. Products must look perfect and be uniquely processable. This is made possible by a very sophisticated program of additional treatments that are applied according to specific requirements.

A single integrated metallurgical facility.

No matter when or where you order. Steel providers always receive the same high level of quality from voestalpine for their customers. Even after many years. This is made possible by producing at a location that is internationally one of the most innovative and sustainable.

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Machinery Industry

Machinery Industry

The products of voestalpine feature excellent processing properties and provide optimized solutions for the machinery industry.

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Machinery Industry

Made for the toughest tasks

Some industries are what steel was made for. The world of machinery is one of them. Steel made by voestalpine is perfectly within its comfort zone where highest mechanical loads and high-tech materials come together in highly sophisticated designs. Technical limits are constantly being pushed upward by further developments and innovations. Best processability and increasingly demanding mechanical properties lead to complex designs that leave nothing to be desired in terms of performance and efficiency. Steel can be used in the most diverse applications. Wear resistance, ultra-high strengths and high quality in any case.

Exploring new frontiers

What would our daily life be like without machines? Very different, that's for sure. The invention of effective new tools has always been a way of overcoming our limitations, and we are still creating innovative materials to push the limits even further. At voestalpine, we have proven this again and again with new and optimized products. Expertise from a wide range of highly innovative industries is bundled and engineered into materials and solutions for machinery, equipment and vehicles. The solutions are not only convincing in the lab, and they open new possibilities by increasing efficiency in design, production and use.

Consistently reduced weight

When high strength is no longer sufficient. With alform®, voestalpine offers an ultra-high-strength material to be used in combination with the alform® welding system to produce ultra-high-strength weld joints. A reduction in material thickness of more than 70% without compromising any performance results in a weight savings that goes hand in hand with substantially increased efficiency. Best cutability, best forming behavior and excellent toughness round off this power package.

Safely increased efficiency

The demands on the materials used in modern engineering are enormous. Perfect workability during the production process must not be a contradiction to maximum wear resistance and economy of use. With durostat®, voestalpine has succeeded in more than just meeting these requirements. One of the safest, most robust and efficient materials, durostat® boasts of highest durability in abrasive applications, enormous weight savings when compared to conventional structural steels, hardness second to none thanks to a specially developed direct hardening process, best cold formability thanks to fine-grained microstructure and high degree of purity, and best weldability thanks to the optimized carbon equivalent.

The skipster is the true winner in lightness and stability.

alform® makes many things lighter. The thermomechanically rolled (TM) material combines lightness with stability like no other, making it the perfect candidate for countless applications where high load capacity and low weight are essential. This applies to high-tech and complex machinery as well as comparatively simple containers.

TransANT railway freight cars made of high-strength alform® steel

Rail Cargo Group (RCG) was looking for a lightweight design that would meet the logistics requirements of the 21st century. The subsidiary of ÖBB has many years of valuable experience in freight transports and is part of a very strong international network. Coupled with the material expertise of voestalpine, a future-oriented design has now been developed with TransANT. This could be a revolution in railway freight car design.

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