Chromium-6 free; based on chromium trivalent
For direct use in the quench tank or cooling bath
Excellent white rust protection
Passivation products free of hexavalent chrome. Trivalent chrome, water-based passivations for freshly galvanised steel surfaces. A passivation forms a layer that gives improved “white rust” corrosion resistance on galvanised steel surfaces. A HDG surface treated with AD passivation does not give white rust under normal storage conditions.
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The best chromefree passivations available
AD Chemicals has developed a range of passivation products designed to meet the needs of general galvanizers (HDG). Ensuring excellent white rust protection and an easy bath maintanance.
Passivation product characteristics:
- Passivation layer on fresh galvanized steel
- Chrome(III) based
- Protection against white rust
- Direct use in quench tank or in cooling bath
- Provides bare corrosion resistance during storage and transport
- Competes easily with Chrome (VI) based pre-treatments
- Free of substances of very high concern
Types of passivation
Direct use in quench tank (or cooling bath):
- Passivation ADL-32
In cooling bath:
- Passivation ADL-3P
Exceeding the market standard
HDG passivations have a huge range of requirements on a complex combination of zinc based alloys. This drives the need for close working relationships, consultation, testing and pilot line experimentation. With its passivation portfilio AD shows that replacing chromium-6 while maintaining the highest quality is possible.
Direct use in quench tank. Passivation ADL-32 is free of chromium(VI). It is a water-based trivalent chrome passivation to be applied op freshly galvanized steel surfaces.
Passivation ADL-3P is free of chromium(VI). It is a water-based trivalent chrome passivation to be applied op freshly galvanized steel surfaces.