Example of use (automotive)

Aluminium components with GST coating


Partial surface treatment to protect against wear and corrosion: treatment in closed system using GST (Gramm Selective Technology) with high accuracy and savings in chemicals.



  • Resistant to wear and tear
  • Resistant to corrosion
  • Electrically insulating
  • Attractive surface
  • Pressure cast alloys such as Al 226 can be coated with very low roughness
  • Distribution of layer thickness excellent, even for complicated shapes
  • Coating to ultimate dimensions without subsequent polishing or lapping
  • Oxidur 700 with Vickers hardness 700 Hv
  • Plating process can be integrated into manufacturing flow

Coating material: OXIDUR hard anodising
Substrate: aluminium
Selective or all-over coating by
GST (Gramm Selective Technology) or
GSP (Gramm Speed Plating)