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ORGANIC COATED
           

 

 

Coil coating process

Organic coated steels are produced in the coil coating process where (organic) coating material is applied on a rolled metal strip in a continuous process including cleaning and chemical pretreatment of the metal surface and one-side or two-side, single or multiple application of liquid paints subsequently cured in ovens and finally rolled into coils.

SELECT BASE STEEL MATERIAL

Basic material for organic coating sheet production is hot dip galvanized steel with metallic coating or cold rolled steel without surface treatment. Base material is in compliance with standards mentioned below:

Brand correspondence

 

Utilization

Standard

Grade

Galvanized substrate

Drawing

EN 10346

DX51D+Z, DX52D+Z, DX53D+Z

Structural

EN 10346

S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z

Cold rolled substrate

Drawing

EN 10130

DC01, DC03

Structural

DIN 1623/09

S215G

Dimensions of sheets and coils - Cold rolled substrate (mm)

Nominal
thickness

Width

750

1001

1100

1250

1261

1300

1331

1400

1500

0,40 - 0,49

   

 

 

 

 

 

 

0,50 - 0,55

 

 

 

 

 

 

 

 

 

0,56 - 0,59

 

 

 

 

 

 

 

 

 

0,60 - 0,80

 

 

 

 

 

 

 

 

 

0,81 - 1,00

 

 

 

 

 

 

 

 

 

1,01 - 1,50

 

 

 

 

 

 

 

 

 

 

 - drawing grades only

   - drawing and structural grades

Dimensions of sheets and coils - Galvanized substrate (mm) 

Nominal
thickness

Width

800

1050

1100

1261

1300

1331

1400

1500

0,40 - 0,49

 

 

 

 

 

 

 

0,50 - 0,55

 

 

 

 

 

 

 

 

0,56 - 0,59

 

 

 

 

 

 

 

 

0,60 - 0,80

 

 

 

 

 

 

 

 

0,81 - 1,00

 

 

 

 

 

 

 

*

1,01 - 1,50

 

 

 

 

 

 

 

 

 

 - drawing grades only

   - drawing and structural grades
* width 1301mm and more after agreement

Inner diameter: +/- 500 mm, 600 mm
Outer diameter max.: 1 450 mm
Coil weight: min. 2,0 t – max. 10,0 t
Use protective inner spoon
for ID 508 mm, no for ID 610 mm

Other grades corresponding to international (ISO) and national (ASTM, DIN, JIS, GOST and others) standards and other dimensions are subject to prior agreement.
Minimum metal coating masses as specified for certain application need to be indicated at the time of inquiry and order. Weight of zinc coat is 100, 140, 150, 200, 225 or 275 g/m2 applied on both sides, or 140/85 g/m2 with higher coating on top side. Minimum zinc coating for one side is 50 g/m2. Specific coil weights are subject to prior agreement.

APPLICATIONS

Exterier applications - WALLS

Exterier applications - ROOF

Roof exterior accessories

Other exterior applications

Interior applications

ENVIRONMENTS

For applications where the prepainted products are submitted to the influence of exterior atmospheres, the end user has to consider the environments for successful usage and correct product application for its long-term service. Here are some examples and descriptions of environments:

Rural environment

Urban area

Industrial area

Marine area

Coastal environment

How we produce

Organic coated steels are produced in the coil coating process where (organic) coating material is applied on a rolled metal strip in a continuous process including cleaning and chemical pretreatment of the metal surface and one-side or two-side, single or multiple application of liquid paints subsequently cured in ovens and finally rolled into coils.

COATING

Depending on the application, the color-coated steel flat products may be delivered with a specified organic coating in 2, 3 or 4-layer systems.

Topcoat, finishing coat   final (uppermost) coat of a multiple-coat system

Primer, priming coat   first coat of a multiple-coat system

Chemical Pretreatment   thin coating that provides chemical bond between metallic and organic coating, together with primer ensures good adhesion and corrosion resistance

Backcoat, backing coat   coating of any type on reverse side with no particular requirements on appearance, corrosion protection, formability, etc.

Protective foil   strippable plastic film applied to the coated surface in order to afford temporary protection against mechanical damage

Primers

The function of the primer is to provide good intercoat adhesion between substrate and topcoat. It also provides corrosion resistance to the overall coating system. There is a variety of primers available based on the application, environment, requested topcoat appearance, thickness and functionality of final coating system. The specific primer to be used is recommended by the specialist paint producers.

Primers differ in:

chemical composition:

chrome-free

resin system/base:

polyester, epoxy

applicable thickness:

low build (4-15µm), high build (up to 25-30µm)

physical properties:

viscosity, density, spreading rate

functionality:

flexibility, elasticity, hardness, corrosion resistance

appearance:

smooth, spray effect, orange peel effect

Topcoats

The topcoat is a coating applied to the primer and usually it is the uppermost layer of the coating system that is exposed to the surrounding environment. The function of the topcoat is to provide esthetic and decorative appearance (color tone, gloss, texture, special effects) and/or corrosion protection.

There is a variety of topcoats available based on the application, environment, requested appearance, thickness and functionality of final coating system. The coating material used for topcoats consists of organic polymers, pigments, additives and solvents which contribute to the final properties of the topcoat.

Topcoats differ in:

chemical composition:

chrome-free

resin system/base:

polyester, PVdF, polyurethane

physical properties:

viscosity, density, spreading rate

functionality:

decorative colored coat, flexibility, corrosion protection, anti- pressure marking, anti-fretting smooth, textured (spray effect, orange peel effect, colored

appearance:

smooth, textured (spray effect, orange peel effect, colored options and gloss ranges), spray effect, orange peel effect, colored options and gloss ranges

Backcoats

The backing coat has not only decorative function, but it also provides protection on the inner side of panels from the less severe environments encountered within a building. In sandwich panel applications, it provides good adhesion of insulation foams.

Backcoats are available for use with or without primer. When applied as a single coat, the typical thickness is 8-12µm. With primer it is possible to achieve greater thickness and better corrosion resistance.

There is a variety of backcoats available based on the application, environment, requested appearance and functionality of final product.

chemical composition:

chrome-free

resin system/base:

polyester, epoxy

physical properties:

viscosity, density, spreading rate

functionality:

flexibility, corrosion protection

appearance:

smooth, colored options

Paint Technology:
Color-coated sheets are made of quality metal substrates with high performing pre-treatment, primer, topcoat and backing coat. A carefully controlled manufacturing process delivers the best quality and performance.

Gloss

Gloss is an optical characteristic of a surface specified by its ability to reflect light.
The gloss ranges according to EN10169 :

Gloss range (informative indications)

Matt Low gloss Satin Semi-gloss Gloss High gloss

Gloss unit range (60°)

≤ 10

> 10 ≤ 20

> 20 ≤ 40

> 40  ≤ 60

> 60 ≤ 80

≥ 80

If gloss is not specified in the order, satin gloss is standardly applied.

Flexibility

Depending on the end-use of color-coated flat products the performance properties and product flexibility will be agreed at the time of inquiry and order. Product flexibility is evaluated by applying the T-bend test to the exposed face. Flexibility of the product depends on the substrate thickness, the metallic protection and the organic coating. During the flexibility testing, there must be no visible cracks when the paint film is examined with a 10x magnification. The flexibility ranges in USSK production are:

Flexibility range

High flexibility,
for severe forming conditions
Standard flexibility

Minimum bending radius
(T nominal thickness
of the product)

≤1,5 T

max. 3,0 T for drawings grades
max. 3,5 T for structural grades

DOWNLOAD

GUARANTEE FOR
ORGANIC COATED STEEL

Download PDF (278 kB)

GENERAL DELIVERY TERMS
AND CONDITIONS

CLEANING AND MAINTENANCE
OF PAINTED SURFACE

Download PDF (300 kB)

 

Logistics information

 

We offer flexible product delivery with multiple options for packaging and methods of transportation.

» Download Recommendations to transport and storage (215 kB)

 

Shipping

The final products are shipped to the customers via truck, railway, ships or transportation directly from our covered storage yard.

                

 » more info       

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CONTACT

JURAJ BOLF

Director Sales Prepainted

+421 556 739 493
+421 904 704 103

jbolfsk.uss.com

 

POSTAL ADDRESS:
 

U. S. Steel Košice, s.r.o.
Vstupný areál U. S. Steel
044 54 Košice
Slovak Republic

Phone.: +421 55 673 1111
Fax: +421 55 673 1110

 

BILLING INFORMATION:
 

ID No.: 36 199 222
VAT ID: SK7020000119

Commercial Register: District Court Kosice I, Sec.: Sro, File No.: 11711/V

VISITING US:

 

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You can also visit the website of our parent company United States Steel Corporation.