clearcover®

voestalpine Stahl GmbH

Company

Segments

Automotive

Commercial vehicle industry

Machinery Industry

Roof, cladding, drainage

House industry

Household systems

Electrical industry

Tube and section industry

Cold-rolling industry

Steel Service Center

Steel trade

Offshore

Linepipe

Apparatebau

Stahlbau

Products

Steel strips

Hot-rolled steel strip

Cold-rolled steel strip

Electrical steel strip

Hot-dip galvanized steel strip

Electrogalvanized steel strip

Organic-coated steel strip

Metallurgical by-products

Slag products

Regeneration products

Lime products

Recycled materials

Coal by-products

Replacement reducing agents

Brands

alform®

altrix®

colofer®

corrender

durostat®

isovac®

ahss classic

ahss exposed

ahss high-ductility

hot rolled drive

martensitic steels

phs-ultraform®

phs-directform®

clearcover®

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clearcover® - chromium-free passivation 2.0

clearcover® an environmentally friendly passivation system without chromium III or chromium VI and it is free from heavy metals such as molybdenum, manganese or cobalt. The additional innovative treatment is applied to hot-dip galvanized or electrogalvanized steel strip and can be supplied in combination with oil or phosphating.

Sustainable and environmentally compatible passivation
Excellent corrosion protection during storage
Reliable corrosion protection during transport
Good resistance to emulsions
Excellent weldability
Direct paintability

^{Passivation processes in comparison}	^{Corrosion protection (bright finish)}			^Direct ^coatability	^Weld^ability
	^Stack ^{(new test)}	^SST	^{Constant humidity/corrosive environment test}	^Direct ^coatability	^Weld^ability
^{clearcover® — the new chromium-free passivation}	++	++	++	+	++
^{Existing chromium-III passivation}	+	+	+	+-	++

Multiple certifications

Extensive material certification is naturally a minimum requirement at voestalpine in our effort to provide high-performance additional treatments. Actual properties often go far beyond the standard minimum requirements.

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Steel strips

Hot-dip galvanized steel strip

Hot-dip galvanized steel made by voestalpine is characterized by high corrosion resistance, excellent working properties and a wide spectrum of applications.

Hot-dip galvanized steel strip

An excellent all-rounder

Hot-dip galvanized steel made by voestalpine is characterized by high corrosion resistance, high-quality appearance, excellent working properties and a wide spectrum of applications. The portfolio of steel grades ranges from super deep-drawing grades to grades with highest strengths (advanced high-strength steels). Depending on customer requirements, voestalpine supplies a comprehensive range of available widths and thicknesses with tailor-made metallic coatings. A variety of surface finishing treatments also make it possible to extend the range of applications. voestalpine supplies high-strength steels with unique exposed-panel quality and offers a ZF coating for this purpose. The world's only hot-dip galvanized press-hardening steels made by voestalpine round off the extensive portfolio.

Materials for cold forming

Mild steels
Structural steels
Micro-alloyed steels
Bake-hardening steels
High-strength IF steels
Carbon-manganese steels
Martensitic steels
Dual-phase steels
Dual-phase high-ductility steels
Complex-phase steels
Complex-phase high-ductility steels

Some steel grades are available as galvanized hot-rolled strip:

Hot-rolled low-alloyed or microalloyed steels
Hot-rolled ferritic-bainitic steels
Hot-rolled complex-phase steels

Materials for hot forming

Press-hardening steels for hot forming are available in various strengths and are coated with zinc or zinc-iron. Best crash behavior, high dimensional accuracy and very good joining properties are the hallmarks of components made of these materials.

Metallic coatings

Zinc (Z) for applications subject to average corrosion (galvanized)
Zinc-iron (ZF) for corrosion protection with highest weldability requirements (galvannealed)
Zinc-magnesium (ZM) for best cathodic corrosion protection (corrender)

Metallic coatings Z and ZM are available with normal (N) and small spangles (M). The surface of zinc-iron coating is spangle-free. Upon customer request, voestalpine supplies different zinc coatings per side (differential galvanizing).

corrender is the high-performance zinc-magnesium-aluminum coating made by voestalpine.

This surface treatment provides excellent corrosion protection and processability, offering a high-performance alternative to conventional protective coatings for hot-dip galvanized steel strip. Corrender has been supplied in series since 2007, and voestalpine has established comprehensive product know-how and expertise in this area.

Coating	Thickness/mm	Width max./mm	Coating
Z and GI	0.45 – 4.00	1730	Z70 - Z600
ZF and GA	0.45 – 2.30	1730	ZF70 - ZF140
ZM (corrender)	0.45 – 2.30	1730	ZM90 - ZM200

"At the Linz site, we manufacture a very extensive product mix in five different hot-dip galvanizing lines. We apply zinc coatings in various surface qualities on mild to high-strength steel grades. Our team of specialists meets the challenge with a high level of commitment and quality awareness every single day. We set the standards with additional chromium-free and environmentally friendly treatments such as clearcover® or multiface®.

Maximilian Kaiser, Main Process Manager, Hot-dip Galvanizing

Surface quality

As-coated surface (A)
Improved surface (unexposed and B)
Best surface (exposed or C) for special requirements such as exposed panels (IF steels) in the automotive industry for additional benefits:
Minimum waviness
High contour sharpness in reflections
Also for ZM (corrender coatings)
Optimum forming properties
Efficient painting

Design for Z and ZM	Mean roughness value Ra [µm]
Standard	0.6 – 1.9
Roughness: especially smooth	0.5 max.
Roughness: smooth	0.9 max.
Special option: half matt	0.7 – 1.3
Special option: matt	1.3 – 1.9

Numerous additional treatments

Subsequent surface treatment additionally improves the existing product properties in comparison to the high-quality base material and provides solutions to special applications:

Anti-fingerprint (multiface®) for the household appliance and construction industries
Chemical passivation and/or corrosion protection oils protect against white rust formation and are free of chromium. (clearcover®)
Forming aids such as a phosphating or passivation layer (dryform®)
Optimized tribology and excellent oil distribution (prelube2)

Further processing

Hot-dip galvanized steel strips available in a wide range of widths and lengths:

Wide strip
Slit strip (slit)
Cut-to-length sheets
Blanks

Supply pursuant to EN 10346 and VDA 239100 Deviations upon agreement.

Downloads

Range of supply hot-dip galvanized steel strip PDF3.54 MBeng-GB

This could also be of interest to you:

Cold-rolled steel strip

The excellent surface appearance of cold-rolled steels made by voestalpine is convincing. The continuous production process enables high-quality steel strips with narrow thickness tolerances.

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Hot-rolled steel strip

Tailored to the specific needs of the customer, the product portfolio of voestalpine ranges from mild steels to meet highest forming requirements to ultra-high-strength steels for the most stringent applications.

More information

Electrogalvanized steel strip

Electrogalvanized steel strip made by voestalpine stands for excellent corrosion protection and the best surface quality.

More information

Surface treatments

Surface treatments extend the range of applications as coordinated with pre-defined product requirements of each individual customer.

More information

Further processing

The Steel & Service Center provides unique product and material expertise and offers answers to the most difficult questions.

More information

Back

Household systems

Innovative developments in the field of household systems are beneficiaries of the expertise and synergies in high-tech applications.

Household systems

Say you are looking for a supplier that offers more.

We at voestalpine consider ourselves to be pioneers who are always one step ahead in the most innovative industries. Every customer in the household systems industry benefits from this expertise. A broad product portfolio is supplemented by highly innovative additional treatments and special products developed specifically for industry requirements.

A wooden fire door?

Yes! Available in a very large number of different colors, colofer® is available in many different designs that appear deceptively genuine, including stainless steel, wood or carbon. A special 3D feel makes our wood surfaces hard to differentiate from authentic wood surfaces. A broad portfolio of additional steel products and efficiency-enhancing treatments is also available.

The use of colofer® instead of powder-coated components saves costs!

colofer® is the brand name for pre-coated steel strip made by voestalpine. You can significantly reduce your costs and increase efficiency by switching from powder-coated components to colofer® CASING. colofer® CASING is characterized by particularly high scratch resistance and can be processed as a precoated product without the use of any protective film. With the help of the colofer® color service, the desired color shade can be easily reproduced and, thanks to the Steel Service Center, the product can be supplied in coils, cut sheets or slit strip.

Precoated steel strip for lighting

colofer®, the precoated steel strip made by voestalpine, can be formed easily and, depending on customer requirements, can be coated on one side (top side only) or on both sides (top and bottom side) with a coating specially developed for the lighting industry. Up to 95 gloss units and an epsilon value of ≥ 85 can be achieved. With the help of the colofer® color service, the desired color shade can be easily reproduced and, thanks to the Steel Service Center, the product can be supplied in coils, cut sheets or slit strip.

Almost invisible and yet so effective

multiface® is a multifunctional, nearly invisible protective coating with excellent anti-fingerprint properties. The coating provides excellent corrosion protection during transport and storage and very good forming properties without having to employ any additional lubricants. Components coated with multiface® can be painted or adhesive-bonded without any additional conditioning and can be processed immediately. The surface features very good adhesive properties.

Are you familiar with corrender as a powerful alternative?

By adding magnesium (~1.5% by weight) and aluminum (~2.5% by weight) to the zinc strip, a high-performance protective layer is created which, with the same layer of the metallic protective layer, provides outstanding corrosion protection and excellent workability as compared to conventionally galvanized steel strip.

Heating Ventilating & Air Conditioning

The outstanding product properties of colofer®, corrender, direct-e® and multiface® offer the best possible conditions for efficient solutions in ventilation and air conditioning units. High resistance to weathering and corrosion, uncomplicated formability, simplified further processing and the choice of different colors and surface designs with nature-friendly manufacturing processes and proven voestalpine service offer ideal conditions for new impetus in the industry.