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xtend®

picture of a screened material sample to illustrate the material property xtend

General:

Salzgitter Flachstahl offers CR440Y780T-DH dual phase steel with increased formability under the brand name HCT780X xtend® with a hot-dipped zinc coating. The brand name xtend® stands for the improved expansion provided by these steels. Like the previously offered dual phase steels, the xtend® steels also offer excellent processing characteristics, including weldability.


Highlights:

Performance-Button Funktionssteigerung

Function enhancement

Cost-effectiveness

Performance-Button Gewichtseinsparung

Weight reduction


picture of the forming limit curve xtend
picture of a stress-strain diagram

Customer benefit:

  • Forming Limit curves (FLC) shows a better forming potential of CR440Y780T-DH (HCT780Xxtend®+Z) in comparison to CR440Y780T (HCT780X+Z)
  • The increased elongation allow the manufacture of solider, more complex components and consequently a further increase in passenger safety without necessitating an increase in the vehicle weight.

Characteristics:

Steel Grade Yield Strength
Tensile Strength

Elongation
Hardening exponent
n
BH2
according to VDA Rp0,2
MPa
Rm
MPa

A80 mm
%
n4-6 n10-20/Ag MPa
HCT780X CR440Y780T-DP 440 - 550 780 - 900 ≥ 14 ≥ 0,15 ≥ 0,11 ≥ 30
HCT780Xxtend® CR440Y780T-DH 440 - 550 780 - 900 ≥ 18 ≥ 0,18 ≥ 0,13 ≥ 30

Applications:

  • complex, safety-related components (dual phase steels)

Contact person Salzgitter Flachstahl GmbH:

Thorsten Gintaut

Eisenhüttenstraße 99
38239 Salzgitter

Phone: +49 5341 21 - 26 54

gintaut.t@salzgitter-ag.de

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