Cold-forming-ahss-high-ductility

The benchmark for high-strength steels with exceptional crash properties

High-strength ahss high-ductility steels for cold forming are a further development of classic ahss steels (advanced high-strength steels) made by voestalpine. They offer an unprecedented balance of properties:

  • High strength
  • Best formability
  • Good weldability
  • Excellent crash behavior

The alternative to press-hardened steels

voestalpine is a pioneer in high-strength cold-formable steels. ahss steels made by voestalpine have been in industrial use since the 1990s. This competitive edge in expertise has come to bear in the development of ahss high-ductility steels and meet the most sophisticated demands of automotive design. More and more automobile manufacturers rely on cold-formable steels for safety-relevant structural components. voestalpine is their partner with a competitive edge and approvals from many OEMs.

Unique bending properties, excellent deep-drawing properties

voestalpine offers the optimum ahss high-ductility steel for qualified crash-relevant applications, e.g. passenger compartment components, seat rails or sections. The high-quality voestalpine zinc coating (hot-dip galvanizing and electrolytic galvanizing) ensures reliable corrosion resistance. 

A long story of success

The excellent properties of voestalpine steels ahss high-ductility are achieved by modified microstructure design. One factor is the increased bainite content as part of the matrix structure and also the partial use of tempered martensite. The precipitation of iron carbides is suppressed by the alloy design and complex temperature control. This occurs during bainite formation and tempering of the martensite.

The portfolio includes the following:

Sample component made of ahss high-ductility dual-phase steel
Sample component made of ahss high-ductility dual-phase steel

ahss high-ductility dual-phase steels

With excellent deep-drawing properties and excellent crash behavior and minimum tensile strengths of 590, 780, 980 and 1180 MPa.

EN 10338 and/or EN 10346VDA 239-100
voestalpine special grades 
-
-CR330Y590T-DH
-CR440Y780T-DH-
-CR700Y980T-DH-
--CR850Y1180T-DH mit min. 10% Dehnung
--

CR850Y1180T-DH mit min. 13% Dehnung

 

ahss high-ductility complex-phase steels

Thanks to their unique bending properties, low edge crack sensitivity and excellent crash performance, these high-ductility complex-phase steels boast minimum tensile strengths of 980, 1180 and 1400 MPa.

Sample component made of ahss high-ductility complex-phase steel
Sample component made of ahss high-ductility complex-phase steel

EN 10338 and/or EN 10346VDA 239-100
voestalpine special grades 
--CR780Y980T-CH
--CR800Y980T-CH
--CR850Y1180T-CH
--

CR900Y1180T-CH

--CR1000Y1370T-CH