Extremely Corrosion- and Temperature-Resistant
Long-Term Corrosion Protection for High Temperatures
Zinc-Nickel Alloy with 12–15% Nickel
The galvanically deposited zinc-nickel alloy with a nickel content of 12 to 15 percent has proven itself especially in applications that must remain extremely corrosion-resistant despite high temperature loads.
Typical application areas for components with zinc-nickel coatings are the engine compartment, chassis and underbody areas in automotive engineering, as well as offshore applications.
Thermally loaded parts withstand the neutral salt spray test for more than 1,000 hours against the onset of base metal corrosion according to DIN EN ISO 9227.
Post-treatment with selected TOPCOATS can further increase corrosion resistance and resistance to chemical substances.
Alloy, Corrosion Protection, and Test Values
12–15%
nickel content
Galvanically deposited zinc-nickel alloy.
> 1000 h
long-term corrosion protection
Thermally loaded parts against the onset of base metal corrosion.
360 / 720 h
without white rust / red rust
In the neutral salt spray test according to DIN EN ISO 9227 – NSS.
Steel & Cast Iron
suitable materials
Coating available as rack or drum goods.
Advantages of Zinc-Nickel Coatings
- Economical procedure
- High long-term corrosion protection
- Bending capacity and flangeability
- Enhanced temperature resistance
- High peel strength of the passivation layers
- Selective coating possible
- Internal coating with inner-anode technique
- Appealing appearance
- Environmentally friendly
More information about Zinc-Nickel
Suitable materials:
- Steel
- Cast iron
Corrosion resistance:
According to DIN EN ISO 9227 – NSS
- 360 h without white rust
- 720 h without red rust
Post-treatment passivation:
- Rack: transparent, thick-film and thin-film passivation
- Drum: transparent, thick-film and thin-film passivation
Optional post-treatment:
- Sealing with or without slip additives
- TOPCOATS
- Lubricant treatment
- Preservation of uncoated internal areas, e.g. pipes
- Heat treatment for hydrogen de-embrittlement (annealing)
Chromium(VI)-free passivations:
- Novatec 300 to 321
Chromium(VI)-free combined coatings:
- TRICOAT black
- TRICOAT silver
Products:
- ZinKlad 1000
- ZinKlad 1000 B
- Gleitmo 605
- Torque’n Tension
Product Novatec 300 ff
Under the designation Novatec 300 ff, you receive a chromium(VI)-free galvanic zinc-nickel surface in a quality that meets and even exceeds common automotive specifications and surface standards.
This corrosion protection system, developed by Holder, is temperature-resistant. Under extreme thermal loads, for example in the engine compartment or brake area, the protective effect remains fully intact.
The corrosion protection system is environmentally friendly. Novatec 300 ff meets the requirements for chromium(VI)-free and RoHS-compliant surfaces.
What is zinc-nickel coating?
In this galvanic process, a zinc-nickel alloy with a nickel content of 12 to 15 percent is deposited. The coating offers particularly high long-term corrosion protection and is suitable for components that are exposed to high temperatures and corrosive loads at the same time.
Which application areas is zinc-nickel suitable for?
Typical application areas are the engine compartment as well as chassis and underbody areas in automotive engineering. Zinc-nickel is also suitable for components in offshore applications due to its high corrosion and temperature resistance.
What corrosion resistance does zinc-nickel achieve?
In the neutral salt spray test according to DIN EN ISO 9227, 360 hours without white rust and 720 hours without red rust are achieved. Thermally loaded parts withstand the test for more than 1,000 hours against the onset of base metal corrosion.
Why is zinc-nickel suitable for high temperature loads?
The zinc-nickel system Novatec 300 ff is temperature-resistant and retains its protective effect even under extreme thermal loads, for example in the engine compartment or brake area.
Which materials can be coated with zinc-nickel?
Zinc-nickel is particularly suitable for components made of steel and cast iron. The coating can be applied as rack or drum goods.
What passivations and post-treatments are possible?
Transparent thin-film and thick-film passivations are available for rack and drum goods. Optionally, sealing with or without slip additives, TOPCOATS, lubricant treatment, preservation of uncoated internal areas, and heat treatment for hydrogen de-embrittlement can be applied.
How can TOPCOATS improve the zinc-nickel coating?
Selected TOPCOATS can further increase the corrosion resistance and resistance to chemical substances of the zinc-nickel surface. The post-treatment is selected to match the component’s later use.
Is Novatec 300 ff chromium(VI)-free and RoHS-compliant?
Yes. Novatec 300 ff is a chromium(VI)-free zinc-nickel system and meets the requirements for chromium(VI)-free and RoHS-compliant surfaces. Chromium(VI)-free combined coatings such as TRICOAT black and silver are also available.
What additional products are available for zinc-nickel?
Depending on requirements, products such as ZinKlad 1000, ZinKlad 1000 B, Gleitmo 605, and Torque’n Tension are used, among others.
Which standards and customer specifications apply to zinc-nickel?
For zinc-nickel, VW / Audi TL 244 (TL 13750), BMW GS 90010 ZNNI SI, DBL 8451, DBL 8466, Ford WX 100, Porsche PN 11011, and DIN 50979 are relevant, among others. Further customer-specific requirements can be coordinated on a project basis.