Steel Division

ahss high-ductility

ahss high-ductility stands for “advanced high strength steels high-ductility”.voestalpine developed these high-strength, cold-rolled steels as an enhancement to the classic AHSS steels (dual-phase, complex-phase, and TRIP steels with minimum tensile strengths up to1200 MPa). ahss high-ductility steels offer a previously unattained balance among the following properties:

  • high-strength
  • top forming
  • good weldability
  • excellent crash behavior

Asian trend. Asian automakers rely heavily on high-quality cold-formed steels for safety-relevant parts. Although European OEMs are focusing more on press-hardened steels, in Asia there is an increasing demand for highest-strength cold-formed steels. voestalpine’s AHSS developments were industrially implemented in the mid-90s, and this solid know-how edge paid off during the development of high-ductility steels. These steels have since been certified by many European and Asian OEMs, and accordingly major orders have been booked. The keen interest is reflected in the many ongoing certifications. Typical applications for high-ductility steels are the classic crash-relevant components in the passenger compartment as well as seat tracks and profile applications.

Coatings and portfolio. Proven metallic coatings protect these steels from corrosion. voestalpine offers the usual automotive coatings—galvanized and electrolytic. The portfolio includes:

  • ahss high-ductility complex-phase steels with unbeatable bending properties for a yield strength with minimum tensile strengths of 980 and 1180 MPa
  • ahss high-ductility dual-phase steels with outstanding drawing properties and excellent crash behavior with minimum tensile strengths of 590, 780, 980, 1180 MPa

The “deep” secret of success. These excellent properties are achieved based on a modified microstructure design unlike that of “classic AHSS steels”. The key is increasing the bainite content in the matrix structure, and sometimes using tempered martensite for highest-strength steels. The extraordinary characteristics result from a suitable alloy design and complex temperature control that prevents the separation of iron carbides both during bainite formation and when tempering the martensite.

Cold-rolled steel strip

Cold-rolled steel strip

Cold-rolled steel strips made by voestalpine shine with the best surface appearance. Our continuous production process and modern H2 annealing technology allow the manufacture of high-quality cold-rolled steel strip with narrow thickness tolerances.

Portfolio

The comprehensive steel grade program makes cold-rolled steel strip a true all-round material that can be used in applications from simple sections to complex deep-drawn parts. Cold-rolled steel strip is used in the household appliance industry (e.g. for washing machines, dishwashers, clothes dryers, refrigerators, stoves, hot-water boilers), radiator industry, automotive industry (for auto body parts in less corrosive environments), packaging industry and in the tube and section industry.

Steel grades

  • Mild steels
  • Structural steels
  • Phosphorus-alloyed steels
  • Micro-alloyed steels
  • Bake-hardening steels
  • High-strength IF Steels
  • Dual-phase steels
  • Complex-phase steels
  • TRIP steels

Cold-rolled steel strip 

  • Excellent surface quality 
  • Excellent cold formability 
  • Highly uniform mechanical properties 
  • Narrow thickness tolerances thanks to the most modern production technologies

Hot-dip galvanized steel strip

Hot-dip galvanized steel strip

Hot-dip galvanized steel strip is characterized by its high degree of corrosion resistance, excellent working properties and a wide spectrum of applications.

Portfolio

Tailored to your specific needs, our portfolio ranges from extremely mild to advanced high-strength steel (AHSS) grades and includes widths up to 1,730 mm and thicknesses ranging between 0.5 mm and 3.5 mm. All hot-dip galvanized products of voestalpine have one thing in common: The best processing characteristics and highest degree of corrosion protection. Special features include Galvannealed and ZincMagnesium hot-dip galvanized steel strip.

Steel grades

  • Mild steels for cold forming
  • Structural steels
  • Micro-alloyed steels
  • Bake-hardening steels
  • Higher-strength IF steels
  • Dual-phase steels
  • Complex-phase steels
  • TRIP steels
  • Press-hardening steels for hot forming (phs-ultraform)

Surfaces

  • Surface types ranging from standard A surface to high-end C surface properties
  • Adjustment of defined strip roughness possible
  • Post-treatment to protect against the formation of white rust: wide variety of oils, chromium-free passivation, anti-finger-print system or micro-phosphating

Different types of hot-dip galvanized steel strip 

  • Conventional hot-dip galvanized steel strip (Z) with zinc coating thicknesses ranging from Z70 to Z600 
  • Hot-dip galvanized steel strip galvannealed with zinc-iron coating (ZF) allows coating thicknesses ranging from ZF70 to ZF140. 
  • Hot-dip zinc-magnesium galvanized steel strip (ZM); ZM90–ZM200

Electrogalvanized steel strip

Electrogalvanized steel strip

Electrogalvanized steel strip for highest corrosion protection and best surface quality.

Portfolio

The electrogalvanized steel strip portfolio ranges from extremely mild to advanced highest-strength steel grades. All of these grades are characterized by high-quality appearance and excellent shell quality. The mechanical properties are equal to those of cold-rolled sheet. Electrogalvanized steel strip is available with a galvanized coating on one or both sides. The zinc coating layer thicknesses range between 2.5 and 7.5 µm.

Steel grades

  • Mild steels
  • Micro-alloyed steels
  • Phosphorus-alloyed steels
  • Bake-hardening steels
  • High-strength IF Steels
  • Dual-phase steels
  • Complex-phase steels
  • TRIP steels

Electrogalvanized steel strip 

  • Exceptional surface qualities 
  • Various surface treatment types (oiled and/or phosphate-treated) 
  • Additional organic coating upon request 
  • Excellent forming behavior 
  • Galvanized on both sides upon request 
  • Best paintability 
  • High degree of corrosion protection 
  • Excellent weldability and adhesiveness
Automotive industry

Automotive industry


Automotive subsuppliers

Automotive subsuppliers


Electrical industry

Electrical industry


Roof/Cladding/Drainage

Roof/Cladding/Drainage


Household-appliance industry

Household-appliance industry


House Technology

House Technology


Mechanical engineering

Mechanical engineering