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GEOMET® 321

Base coat
Metallic silver color
Waterbased formulation

6-15 µm

Low thickness
FUNCTIONALITIES

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)
  • * Results depend on substrate, geometry of parts and type of application processes.
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 bi-metallic 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.
MARKETS
Parts
Stamping part Stamping part
Stamping part Stamping part
Stamping part Stamping part
Bolt Bolt
Coil spring Coil spring
Ball stud Ball stud
Wheel bolt Wheel bolt
Stamping part Stamping part
Hose clamp Hose clamp
U-bolt U-bolt
Sensor ring Sensor ring
Suspension arm Suspension arm
Bolt Bolt
Washer Washer
Screw Screw
Nut Nut

Industries

Automotive
Building
Construction equipment
Shipbuilding
Railway
Truck
Wind power
Solar power
Oil & gas
Electrical equipment
Telecommunication equipment
Metallic construction
Timber construction
Household appliance
Agricultural equipment
Two-wheelers
Military
APPLICATION

Processes

GEOMET® 321 is applied via bulk dip/spin, rack dip/spin, spray or electrostatic spray. This variety of processes allows to coat all types of parts, even those requiring partial coating, or with recessed and hollow surfaces. Moreover, they are non-electrolytic and thus avoid the phenomenon of hydrogen embrittlement which causes cracking of metals.
BULK DIP/SPIN
ELECTROSTATIC SPRAY
RACK DIP/SPIN
SPRAY
TECHNOLOGY

Waterborne zinc flake

GEOMET® 321 is a patented technology composed of passivated zinc and aluminum flakes in a binder. It has been developed to comply with the highest industrial requirements and regulations regarding environment, health and safety. It is water-based, chrome-free and nonylphenol-free. 

Compliant with
REACh - Registration, Evaluation, Authorization and restriction of Chemicals
2011/65/EU and (EU) 2015/863 - Directive of the European Parliament on the restriction of the use of certain hazardous substances in electrical and electronic equipment
ASTM F1136 / F1136 M - Zinc/Aluminum Corrosion Protective Coatings for Fasteners
EN 13858 - Corrosion protection of metals - Non-electrolytically applied zinc flake coatings on iron or steel components
EN ISO 10683 - Fasteners - Non-electrolytically applied zinc flake coating systems
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