Coatings
We design and develop web and mobile applications for our clients worldwide
Coatings
Overview
Zinc flake coatings consist of a combination of zinc and aluminum flakes suspended in a binder or resin matrix. The flakes form a layered structure on the surface, creating a barrier that shields the metal from environmental factors such as moisture, salt spray, and chemicals. This layered structure also offers cathodic protection to the underlying metal, which means that even if the coating is damaged or scratched, the zinc flakes sacrificially corrode instead of the metal substrate, providing an added level of protection.
These coatings are typically applied using a spray or dip process and then cured through heat or air drying. They can be used as standalone coatings or as part of a multilayer coating system, where they serve as a base layer for additional paint or powder coatings.
How it works?
Barrier effect
The positioning of the zinc flakes gives the film a barrier effect that isolates the metal from the corrosive environment. Indeed the flake morphology increases the length of the path that the aggressive substances must travel to reach and corrode the substrate.
Sacrificial protection
When steel is coated with zinc flake, cathodic protection is achieved. Because of its lower electrochemical potential, compared to iron, zinc oxidizes preferentially: it “sacrifices” itself to protect the steel substrate.
Self Healing
The cathodic protection of zinc produces various kinds of salts (oxides, hydroxides, carbonates…), also known as “white rust”. Thanks to their mobility and adherence properties, these compounds heal the damaged areas of the coating and therefore act as a corrosion inhibitor to protect the substrate.
Adhesion to substrate
Our zinc flake sol-gel binders create strong covalent bonds with the substrate, which ensures excellent adhesion. In addition, at the interface, the migration of corrosion precursors (O2 and H2O) becomes more difficult, which reinforces the barrier effect of the coating.
What is GEOMET ®
GEOMET coating film has a silver-metallic look. Layers of metal flakes are connected with one another through the use of a special inorganic binder.Because the film is extremely thin-only about 8um-it won’t negatively affect the optimal fit between bolts and nuts.
2C2B is the standard manufacturing process.
Corrosion protection
GEOMET® 720 alone or in combination with our range of topcoats passes the most severe cyclic tests. It protects parts from rust even after mechanical damages, such as stone chipping, thanks to its self-healing property. It also ensures bimetallic compatibility with aluminum alloys. Its nominal thickness can be adjusted (from 6 to 15 um and from 1 to 3 layers depending the type of application process to meet the expected performance.
^ Results depend on substrate, geometry of parts and type of application processes.
720-2000 h
(ISO 9227/ASTM B117)
Temperature resistance
Performances maintained up to 350°C.
Static Friction
Static friction coefficient > 0.20. (ISO16047)
Electrical properties
Conductive and offers perfect galvanic properties to avoid bimetallic corrosion in most of industrial assemblies (cast iron, carbon steel and aluminum alloys).
Paintability
Excellent surface conditions for paints or additional coatings.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
- Metallic silver color
- water based formulation
- low thickness
Corrosion protection
GEOMET® 321 alone or in combination with our range of topcoats passes the most severe corrosion cyclic tests. It protects parts from rust even after mechanical damages, such as stone chipping, thanks to its self-healing property. It also ensures bimetallic compatibility with aluminum alloys. Its nominal thickness can be adjusted (from 6 to 15 µm and from 1 to 3 layers depending the type of application process) to meet the expected performance.
720-2000 h
(ISO 9227/ASTM B117/JIS Z2371)
Temperature resistance
Performances maintained up to 300°C.
Static Friction
Static friction coefficient = 0.20.
Electrical properties
Conductive and offers perfect galvanic properties to avoid bimetallic corrosion in most of industrial assemblies (cast iron, carbon steel and aluminum alloys).
Paintability
Excellent surface conditions for paints or additional coatings.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
- Metallic silver color
- water based formulation
- low thickness
Corrosion protection
GEOMET® 500 alone or in combination with our range of topcoats passes the most severe corrosion cyclic tests. It protects parts from rust even after mechanical damages, such as stone chipping, thanks to its self-healing property. It also ensures bimetallic compatibility with aluminum alloys. Its nominal thickness can be adjusted (from 6 to 15 µm and from 1 to 3 layers depending the type of application process) to meet the expected performance.
720-2000 h
(ISO 9227/ASTM B117/JIS Z2371)
Lubrication
GEOMET® 500 is a self-lubricated basecoat, which allows to obtain a stable and controlled friction coefficient in the range of 0.12-0.18. This is a simplified solution compared to using a “base coat + top coat” system.
0.12-0.18
(ISO 16047}
Temperature resistance
Performances maintained up to 300°C.
Electrical properties
Conductive and offers perfect galvanic properties to avoid bimetallic corrosion in most of industrial assemblies (cast iron, carbon steel and aluminum alloys).
Paintability
Good surface conditions for paints or additional coatings.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
SIMPLIFIED TECHNOLOGY with GOOD PERFORMANCE
ZINCROKOTE® is a zinc flake anticorrosion coating using water- based chemistry. Derived from reference technologies developed by NOF METAL COATINGS, it is applied in 2 coats and meets corrosion resistance requirements up to 400 hours in salt spray test.
Coating with metallic silver appearance consisting of:
1 basecoat coat + 1 topcoat coat
Thin dry film, non electrolytic
Water-based chemistry
Free from hexavalent and/or trivalent chromium, nickel and cobalt Passivated zinc and aluminum flakes in a binder
Characteristics and performance
- Adjustable coefficient of friction thanks to PLUS-family topcoats
- Performance maintained at elevated temperatures (up to 300C) .
- Electrical conductivity for most application
- Bimetallic compatibility with aluminum
- No hydrogen embrittlement
- Paintable coating
Corrosion resistance
Average thickness Salt Spray
Test (ISO 9227)
6 μm
> 72 hours without white rust
> 400 hours without red rust
Results may vary depending on substrate, geometry of parts and type of application processes, without thermal shock nor mechanical damage.
Application processes
ZINCROKOTE® can be applied by Dip-Spin, using bulk or rack coating process
Health and Safety
- Aqueous dispersion
- Complies with REACH
Complies with the 2011/65/EU and (EU) 2015/863 directives
International standards
ISO 10683 – Fasteners: non-electrolytically applied zinc-flake coatings
EN 13858 – Non-electrolytically applied zinc-flake coatings on iron or steel parts
ASTM F1136/F1136 M – Zinc/Aluminum Corrosion Protective Coatings for Fasteners
Increasing the size and number of bottles is not enough to prevent loosening.
Combined with our zinc flake basecoats, ECHOTE® WH700 reacts and creates a barrier effect that improves both the corrosion resistance of the system and the galvanic corrosion protection with aluminum and different noble metals.The most effective way to prevent loosening is to stabilize the coefficient of friction and exert an appropriate tightening axial force.
01. Stable fasteninig axial force prevent looseness
When the friction coefficient it stable, it is possible to obtain a stable tightening axial force without any variantion in all bolts when tightening with the same tightening torque.![](https://aumdacro.truewebmakers.com/wp-content/uploads/2025/03/img-2.webp")
02. A stable friction coefficient
Applying the Torquer Series reduses the variation in the friction coefficient and makes it stable. We offer 3 types of lineups that allow you to choose the one that suits your needs best.03. Maximize the utilization of bolts without sacrificing performance
When the tightening torque is 20N*m, with M8 x 1.25 bolts (strength classification 6.8), only 7KN of tightening axial force can be obtained with non-lubricated bolts. However, when Neotorquer is applied, a tightening axial force of 17KN can be obtained. In this way the Torquer series can maximize bolt performance.
04. No more increasing the size in the number of bolts
Until now, it was necessary to increase the size and number of bolts in order to obtain the required tightening axial force. By using the Torquer series, more tightening axial force can be obtained. As a result, it is possible to reduce the size and number of bolts, thus reducing both the cost and the overall weight.PLUS® VL
- water based formulation
- clear color
- low thickness
Lubricant
PLUS® VL allows to obtain a stable and controlled friction coefficient in the range of 0.09-0.14.
0.09-0.14
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, PLUS® VL reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
Color tracing
PLUS® VL can be colored for part visual identification and differentiation.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS® VLh
- water based formulation
- clear color
- low thickness
Lubrication
PLUS® VLh allows to obtain a stable and controlled friction coefficient in the range of 0.09-0.14. It provides outstanding tribological performances and stability regarding multi-tightening with various counterparts materials (cataphoretic paint, aluminum alloys, cast iron and steel) while avoiding stick-slip problems. It also offers excellent behaviour in loosening tests, including at high temperature.
0.09-0.14
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, PLUS® VLh reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
Color tracing
PLUS® VLh can be colored for part visual identification and differentiation.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS® ML
- water based formulation
- clear color
- low thickness
Lubrication
PLUS® ML allows to obtain a stable and controlled friction coefficient in the range of 0.10-0.16. It provides outstanding tribological performances and stability regarding multi-tightening with various counterparts materials (cataphoretic paint, aluminum alloys, cast iron and steel) while avoiding stick-slip problems. It also offers excellent behaviour in loosening tests, including at high temperature.
0.10-0.16
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, PLUS® ML reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
Color tracing
PLUS® ML can be colored for part visual identification and differentiation.
UV tracing
PLUS® ML can be functionalized with a UV tracer for part visual identification and differentiation.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS® ML Black
- water based formulation
- black color
- low thickness
Lubrication
PLUS® ML Black allows to obtain a stable and controlled friction coefficient in the range of 0.10-0.16 when applied on GEOMET® 321 or GEOMET® 720. It provides outstanding tribological performances and stability regarding multi-tightening with various counterparts materials (cataphoretic paint, aluminum alloys, cast iron and steel) while avoiding stick-slip problems. It also offers excellent behaviour in loosening tests, including at high temperature.
0.10-0.16
Coefficient of friction (ISO 16047)
Cosmetic
Very uniform and aesthetic black finish (2 layers needed when applied via bulk dip/spin on GEOMET® 321, GEOMET® 500 or GEOMET® 720, 1 layer when applied on GEOMET® 430).
Corrosion protection
Combined with our zinc flake basecoats, PLUS® ML Black reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS M
- water based formulation
- clear color
- low thickness
Lubrication
PLUS® M allows to obtain a stable and controlled friction coefficient in the range of 0.12-0.18.
0.12-0.18
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, PLUS® M reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Temperature resistance
Combined with our zinc flake base coats, PLUS® M reacts and improves their temperature resistance by raising it to 400°C.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS XL
- water based formulation
- clear color
- low thickness
Lubrication
PLUS® XL allows to obtain a stable and controlled friction coefficient in the range of 0.06-0.09, which is the lowest of our portfolio. It provides outstanding tribological performances and stability regarding multi-tightening with various counterparts materials (cataphoretic paint, aluminum alloys, cast iron and steel) while avoiding stick-slip problems. This topcoat is also perfectly adapted to torque + angle tightenings.
0.06-0.09
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, PLUS® XL reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Corrosion Protection
Combined with our zinc flake basecoats, PLUS® XL reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS L
- water based formulation
- clear color
- low thickness
Lubrication
PLUS® L allows to obtain a stable and controlled friction coefficient in the range of 0.08-0.14. It provides outstanding tribological performances and stability regarding multi-tightening with various counterparts materials (cataphoretic paint, aluminum alloys, cast iron and steel) while avoiding stick-slip problems.
0.08-0.14
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, PLUS® L reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
Color Tracing
PLUS® L can be colored for part visual identification and differentiation.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS 10
- water based formulation
- clear color
- low thickness
Corrosion Protection
PLUS® 10 reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
No hydrogen embrittlement
Implemented via non-electrolytic application processes. This avoids the hydrogen embrittlement phenomenon that causes cracking of metals.
PLUS JL Blue
- water based formulation
- clear color
- low thickness
Lubrication
GEOMETPLUS® JL Blue allows to obtain a stable and controlled friction coefficient in the range of 0.14-0.20 when applied on GEOMET® 720 & GEOMET® 720HP. It provides outstanding tribological performances and stability while avoiding stick-slip problems.
0.14-0.20
Coefficient of friction (ISO 16047)
Corrosion protection
Combined with our zinc flake basecoats, GEOMETPLUS® JL Blue reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
causes cracking of metals.
PLUS JL Black
- water based formulation
- clear color
- low thickness
Lubrication
GEOMETPLUS® JL Black allows to obtain a stable and controlled friction coefficient in the range of 0.17-0.23 when applied on GEOMET® 321, GEOMET® 720 & GEOMET® 720HP. It provides outstanding tribological performances and stability while avoiding stick-slip problems.
0.17-0.23
Coefficient of friction (ISO 16047)
Coloration
Can get uniform black color by 2coats 2bakes
Corrosion Protection
Combined with our zinc flake basecoats, GEOMETPLUS® JL Black reacts and creates a barrier effect that improves both the corrosion resistance of the system and the contact corrosion with aluminum and other materials.
Chemical resistance
Resistance to industrial solvents and automotive fluids.
ECHOTE
- water based formulation
- red color
- light yellow color
- blue color
- green color
- grey color
- density – 1.07±0.03g/Cm³
Lubrication
Coefficient of friction of ECHOTE®WH700 is kept lower to drive screws faster.
0.17-0.23
Coefficient of friction (ISO 16047)
Corrosion Protection
Combined with our zinc flake basecoats, ECHOTE® WH700 reacts and creates a barrier effect that improves both the corrosion resistance of the system and the galvanic corrosion protection with aluminum and different noble metals.
Chemical resistance
Resistance to insecticide and fungicide agent for wood
Coloration
ECHOTE®WH700 can be colored for part visual identification and differentiation.
Scratch resistance
ECHOTE® WH700 has a good scratch resistance performance against to mechanical damaged area.
Coating of screws for lubrication purposes and minimizing variations in coefficient of friction
gleitmo® HMPFilms
HMP films are colloidal dispersions in water of high-molecular polymers. After drying, they create a firmly adhering, dry film that is fast to handling. They are mainly used for coating screws, in order to lower the coefficient of friction and minimize the variations of the coefficient of friction.
With chipboard screws and thread-forming screws it is desirable to have as low a coefficient of friction as possible so that the screws may be driven in more easily and the danger of shearing can be significantly reduced. HMP films produced by FUCHS LUBRITECH have proved themselves in the best possible way for coating these screws.
FUCHS LUBRITECH offers a wide range of HMP films, covering all the existing coefficient of friction demands of the industry. They are approved i.a. by Bosch, General Motors, MAN, Saab, Volkswagen, Volvo, and Würth.
In normal use uncoated metric screws exhibit a very considerable variation in the coefficient of friction. Since the majority of screwing operations are torque-controlled, this gives rise to considerable fluctuations in the tension load, which are unacceptable. With screws coated with HMP films there is only a very slight variation of the coefficient of friction µ, with the result that during installation there are reproducible tension loads.
Solid film lubricants for elastomers
The clean and flexible solution
The necessity for lubricating elastomer sealants for assembling aid, as well as the reduction of friction in dynamic processes, is beyond question and in the past this was primarily undertaken by classic lubricants (oils, greases). In recent years dry lubrication with solid film lubricants has acquired increasing significance in this field.
One of the main benefits for use of a solid film lubricant (SFL) is the possibility of coating mass parts. So it is possible to dispense with the preliminary work (oiling, greasing), which is often carried out by hand, during assembling of the component.
Application
The areas of application for solid film lubricants are miscellaneous and range from the coating of O-rings and shaft sealing rings for assembling aid via the coating of elastomeric components in motor vehicles to its use in sealing elements in valves and fittings. Nearly all rubber materials (e.g. NBR, EPDM, ACM, VMQ) can be coated with solid film lubricants.
Our comprehensive range of services in the field of SFL-coatings
- Technical advice about lubricants
- Sample coating of components
- Custom coating in our own gleitmo-bond coating centre
- Know-how transfer with regard to the coating technology
- Service analysis by our R&D division
- Tailor-made development of products
2.0 Coating of screws for lubrication purposes and minimizing variations in coefficient of friction
The most important properties of gleitmo HMP films:
- Non-slipping and dry
- Film is glossy transparent or satin matt
- Reduction of the coefficient of friction and its variations
- Economical in use, since it can be diluted with water (usual dilution ratios 1:3 to 1:7)
- Facilitation of installation and compatibility of screw connections
- Ageing-resistant and waterproof
- Compatible with metal and plastic
- Environmentally- and user-friendly, since they are water-based
- May be over-painted with most paints UV light additive for coating control
- Proven in practice and recommended by well-known companies
- Simple to apply using an immersion centrifuge or immersing bath
The diagram below shows a comparison of the coefficients of friction using various HMP films on the same type of screw.
Apart from the HMP film the coefficient of friction is affected by a series of additional parameters:
- Galvanized initial treatment
- Screw geometry
- Coating processes
Because of these factors the resultant coefficients of friction can vary from those shown above. What is decisive, however, is that the resultant coefficient of friction shows a high degree of reproducibility for the same coating parameters.
Apart from lubricating screws HMP films have proved their worth with other parts. Examples of this are rivets or lubricating O-rings to make them easier to assemble.
Solid film lubricants for elastomers
The clean and flexible solution
Properties
The solid film lubricant is a firmly adhering surface finishing which preserves the existing physical dynamic material properties of the basic material. As result of the lubricant’s bonded in the coating a decrease of the coefficient of friction of the sealing material occurs, which yields in a clearly reduction of assembling forces (fig. 1).
In the case of components moving dynamically, FUCHS LUBRITECH’s solid film lubricants prevent the occurrence of stick-slip effect and thus avoid the generation of squeaking (fig. 2).
In addition to a reduction of friction a solid film lubricant coating contributes to a significant wear reduction of the parts, which occurs even during the assembling of the sealing elements and can lead to leakages. But even with dynamically stressed components protection against wear results from the use of the solid film lubricant (fig. 3).
Apart from their outstanding mechanical-dynamic properties FUCHS LUBRITECH’s solid film lubricants are resistant to many substances (e.g. water, fuel, mineral oil), which come in contact with the component as a result of environmental influences or technical liquids.
Application
Coating of the components with gleitmo solid film lubricants is mainly carried out using economical application processes, which permit the coating of mass parts (dipping, tumbling etc.). Depending on the type of solid film lubricant used it can be necessary to undertake short-term moderate temperature treatment to speed up curing. Subsequently a firmly adhering, dry solid film coating with a layer thickness of a few microns remains on the surface. According to the parts properties of the coating easy separation of the parts is possible and the adherence of possible contamination can be avoided. Most of the solid film lubricants are provided with a UV active pigment, so that after coating a control can be carried out with the aid of an ultraviolet light.
