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:
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 10346 | VDA 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.
| EN 10338 and/or EN 10346 | VDA 239-100 | voestalpine special grades |
| - | - | CR780Y980T-CH |
| - | - | CR850Y1180T-CH |
| - | - | CR900Y1180T-CH |
| - | - | CR1000Y1370T-CH |
Carbon footprint greentec steel product
| greentec steel product | Maximum carbon footprint [kg CO2e/kg steel] 1) |
| Hot-rolled steel strip (only Complex-phase steel) | 2.10 |
| Cold-rolled steel strip | 2.15 |
| Hot-dip galvanized steel strip | 2.30 |
| Electrogalvanized steel strip | 2.30 |
1) The carbon footprint is calculated pursuant to worldsteel CML 2001-2016 (system expansion) on a cradle-to-gate basis.
All products, dimensions and steel grades listed in each voestalpine supply range are available as greentec steel.
