clearcover® guarantees chromium-free passivation and maximum corrosion protection.

The sustainable and environmentally friendly passivation coating for galvanized steel strip

clearcover® is a sustainable passivation coating with outstanding corrosion protection properties and very good processing characteristics.

The surface treatment is the new, sustainable and environmentally friendly passivation coating without chromium or chromium compounds. The passivation is also free of other heavy metals. The less than one μm thick inorganic coating on galvanized steel strip provides good storage and corrosion protection during transport and supports formability and adhesive bondability.

A sustainable steel sealant available in different types

clearcover® ensures improved corrosion resistance, optimized bonding and paint adhesion and reduces the coefficient of friction during forming operations. The steel surface coating is available in two different types: Available as clearcover® FVB for hot-dip galvanized steel strip and as clearcover® EVB for electrogalvanized steel strip.

The use of clearcover® on passivated galvanized steel provides excellent properties such as reliable corrosion protection during storage and transport, direct coatability and more.

Sustainable passivation for the elimination of time-consuming processes

Possible elimination of energy-intensive and resource-intensive processing steps such as oiling, degreasing, rinsing or drying results in a reduction of the ecological footprint and eliminates the need for costly and time-consuming pretreatments.

Maximum corrosion protection in galvanized steel products

clearcover® surfaces show a resistance to white rust after more than 96 hours of neutral salt spray testing pursuant to DIN EN ISO 9227 and over 50 cycles in alternating humidity and climate change testing (DIN EN ISO 6270-2 AHT). Setting new standards at voestalpine.

The neutral salt spray test shows that a galvanized steel strip coated with clearcover® features the highest level of corrosion protection during storage and transport.

Quick and simple coating thanks to the direct coating process

clearcover® passivation can be applied directly as a powder coating or cathodic dip coating, even when cleaning processes have been eliminated. This eliminates degreasing or other pre-treatment processes and energy-intensive drying steps at the customer. The result is a high level of environmental compatibility with constant or improved performance in terms of paint adhesion and corrosion protection.

Typical applications

Industries that focus on functionality, quality and efficiency:

The chromium-free multicover sealant ensures that materials in the household appliance industry remain visibly unchanged for a long time.

Household appliance industry

The requirements are versatile, regardless of whether it is a matter of transport, forming or coating. clearcover® is particularly popular in products that must retain their perfect appearance after being coated.

The functional surfaces contribute to a long service life of galvanized steel strip in the construction industry.

Construction industry

Excellent forming and corrosion protection properties with good emulsion resistance contribute to extremely efficient production and long component life.
Surface treatments for galvanized steel strip provide effective protection against corrosion in the processing industry.

Processing industry

Prematerial such as that used in profiled sections must not arrive at the customer in uncorroded condition. clearcover® provides very good corrosion protection during transport.

Clearcover® provides storage and transport corrosion protection for applications in the automotive industry and functions as a forming aid.

Automotive industry

Autobody and frame components are often heavily deformed. Solutions have been developed in collaboration with the industry to simplify production processes and minimize tool wear.

Properties at a glance

clearcover® is the future of passivation coatings on galvanized steel strip. clearcover is free of both chromium and heavy metals. The combination of corrosion protection, formability and direct coatability without time-consuming and cost-intensive postprocessing make clearcover® a sustainable passivation. Energy and other resources can be saved by reducing the number of processing steps.

clearcover® passivated galvanized steel strip provides a high level of corrosion protection, good formability and direct coatability.