We use cookies on our website. Some of them are essential, while others enable us to provide you with a better user-experience. You can consent to the use of cookies for statistical purposes by clicking on „Agree and continue“ or deactivate them by clicking on „Reject".

For further information and how you can change your decision at any time, please refer to our data protection policy.

The relevant cookies have been deactivated. All cookies that have already been saved have been deleted.


 /  /  /  / Pretex® focar®

Pretex® focar®

Key Visual Pretex focar
Picture of an engine hood with a detail of the microscopic view of the Pretex surface


Pretex® stands for PREcision TEXturing, the innovative surface structure for coldrolled and galvanised steel sheets, newly developed by Salzgitter Flachstahl. Pretex® is a registered trade mark and is protected internationally. The surface morphology of the sheet is a major quality feature of the product and significantly influences forming behaviour, adhesion and optical characteristics of the car body painting.

With Pretex® focar®, a development of our Pretex® surface, we have significantly reduced the undulation values while keeping the same roughness and high peak count.


Illustration function enhancement

Function enhancement

Illustration cost-effectiveness


Graphic characteristics pretex

Customer benefits:

  • Uniform, defined roughness values
  • Exact reproducibility of the roughness values through use of state-of-the-art electronic process control

  • Improved forming characteristics

  • Excellent paintability even for vertical application resulting from extremely high peak counts and the stochastic distribution of the roughness structure

  • Avoids orange peel and rough surface samples due to the Moiré-effect


  • Mean rough index Ra (µm): 0,9 -1,4 (EG) / 0,9 -1,4 (HDG)
  • Peak Count RPc (cm-1): >75 (EG) / >75 (HDG)
  • Wsa1-5 (µm) - Delivery condition: ≤0,34 (EG) / ≤0,29 (HDG)
  • Wa0,8 (µm) - Delivery condition: ≤0,4 (EG) / ≤0,4 (HDG) 
  • Wsa1-5 (µm) - formed in Marciniak-tool: ≤0,35 (EG) / ≤0,35 (HDG)
  • Wsa0,8 (µm) - formed in Marciniak-tool: ≤0,5 (EG) / ≤0,5 (HDG)


Electrogalvanized Hot-dipped galvanized
Properties ZE; ZE + P (EG; EG + P) Z (GI)
Steel grades VDA-Norm CR4 - CR5 …..(all IF), CR180BH, CR210BH CR3 - CR5….. (all IF), CR180BH
Zinc layer thickness ZE 50/50 – ZE 75/75 Z100 – Z140
Surface finish B/BP (O) MC (O)
Mean rough index (Ra according to DIN EN 10049) µm 0,9 – 1,4 0,9 – 1,4
Peak counts (RPc according to DIN EN 10049) cm-1 > 75 > 75
Wsa 1-5 – Delivery condition µm ≤ 0,34 ≤ 0,29
Wsa 1-5 – Formed in Marciniak-tool1 µm ≤ 0,35 ≤ 0,35
Wa 0,8 – Formed in Marciniak-tool1 µm ≤ 0,5 ≤ 0,5


  • Car body: Inner and outer body parts with high requirements according to paintability and forming properties

Contact person Salzgitter Flachstahl GmbH:

Thorsten Gintaut

Eisenhüttenstraße 99
38239 Salzgitter

Phone: +49 5341 21 - 26 54


Back to top.