Phosphating according to DIN EN ISO 9717

Unsere Technik: Phosphatieren


Phosphating creates thin, compact grained and antisoluble metal phosphate layers on the surface of ferrous parts.

Phosphating is an chemical process. By dipping parts into sour solutions the chemical reaction with the backing material creates a compact grained metal phosphate layer firmly bonded to the surface.



  • good temporary corrosion resistance
  • compact grained layering
  • reduction of friction
  • improvement of sliding properties
  • improved adhesion of coatings
  • electrically insulating properties
  • easier subsequent forming
  • areas not to be coated may be partially covered (cover work if partial dimensional stability is required)

Examples of application


Unsere Technik: Phosphatieren - Werkstoffe


  • iron
  • steel
  • cast iron
Unsere Technik: Phosphatieren  - Anwendungsgebiete

Areas of application:

  • pressed and bent parts
  • engine and transmission parts
  • axles, shafts
  • machine parts
Unsere Technik: Phosphatieren  - Weitere Vorteile

Other advantages:

  • inexpensive
  • simple process
  • environmentally friendly
  • special measurements


  • Layer thickness: 3 – 15 µm
  • Bath sizes::   1850 x 1250 x 580 mm*
  • Color:           light gray to dark gray
  • up to 2 tons weight per part
  • rack working
  • drum working
* rings with outside diameter of 1.700 mm by rotating tool

Standard applied:

  • DIN EN ISO 9717-Fe/[Processes][Mass per unit area]/[Aftertreatments]


    • Processes available:
    • Znph - Zinc Phosphating
    • Mnph - Manganese Phosphating
    • Aftertreatment available
    • T1 - Coating
    • T4 - Oiling, Greasing


The statement ‘Surface acc. to DIN EN ISO 9717-Fe/Znph8/T4 means: Parts are zinc phosphated. The mass per unit area is 8 g / m². At the end the part is dipped into an water-in-oil emulsion for preservation.