galvanizing

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Contact Holding company

Headquarter
The Coatinc Company Holding GmbH

Carolinenglückstraße 6-10
44793 Bochum, Germany
Phone: +49 234 52905-25
Fax: +49 234 52905-15

Your contact person:
Silke Sandmeier
E-Mail: holding@coatinc.com

If you wish to talk to our management team, please get in touch with one of our points of contact, who will take care of any request which goes beyond pure surface finishing.

Marketing

The Coatinc Company Holding GmbH
Carolinenglückstraße 6-10
44793 Bochum, Germany
Phone: +49 271 43478
Fax: +49 271 46869

Your contact person
Diana Posner
d.posner@coatinc.com

Press

The Coatinc Company Holding GmbH
Steinstraße 5
57072 Siegen, Germany
Phone: +49 271 43478
Fax: +49 271 46869

Your contact person:
Petra Böhmer
p.boehmer@coatinc.com

Appearance of galvanized steel trade products

What influence do so-called alloy constituents have on the optic of galvanized steel trade products?

The optic of galvanized steel is significantly dependent on silicon and phosphor. If optical and aesthetic demands on the surface finish are high, steel from group 1 (so-called inert range) is recommended. In order to achieve standard corrosion protection, steel from group 3 (sebisty range) is recommended. The two remaining groups lead to not insignificant limitations in the surface finish and also particularly effect the resistance to mechanical demands which is typical for hot-galvanising (mixed crystal – iron-zinc alloy layer).

Where does the orange peel effect on galvanised steel trade products come from?

What effect does the material or wall width have on the appearance? The greater the material and/or wall width, the longer the temperature of the galvanising bath is stored in the workpiece. The components therefore continue to alloy chemically and physically which defines the visual appearance. The less material used and/or the thickness of the selected steel (here in particular for class 1, inert range) the more possible it is to produce a more sophisticated surface finish. These are normally materials originating from the quality range S235.

How does the appearance change on bright steel?

In addition to the alloy constituents silicon and phosphor, which fundamentally define the appearance, phosphates, which occur as aid in drawn materials, also play a substantial role. Phosphates normally generate the so-called orange peel effect which often occurs particularly in hollow profiles.

Additional information: the above-mentioned problem can be deactivated by using aluminium killed materials. However these materials are normally uneconomical.

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