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 |
Width |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| 750 |
1001 |
1 100 |
1 250 |
1261 |
1 300 |
1331 |
1 400 |
1 500 |
|
|
0,40 - 0,49 |
|
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|
|
|
||
|
0,50 - 0,55 |
|
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|
|
|
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|
|
0,56 - 0,59 |
|
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|
|
|
|
|
|
|
0,60 - 0,80 |
|
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|
|
|
|
|
|
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|
0,81 - 1,00 |
|
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|
|
|
|
|
|
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|
1,01 - 1,50 |
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|
- drawing grades only |
|
| - drawing and structural grades |
Dimensions of sheets and coils - Galvanized substrate (mm)
|
Nominal |
Width |
|||||||
|---|---|---|---|---|---|---|---|---|
|
800 |
1 050 |
1 100 |
1261 |
1 300 |
1331 |
1 400 |
1 500 |
|
|
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 agreemen |
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:
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 |
≤1,5 T |
max. 3,0 T for drawings grades |
DOWNLOAD
GUARANTEE FOR
ORGANIC COATED STEEL
Download
PDF (278 kB)
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.
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CONTACT
JURAJ BOLF
Director Sales Prepainted
 |
+421 556 739 493 |
 |
jbolf |
sk.uss.com
POSTAL ADDRESS:
U. S. Steel Košice, s.r.o.
Vstupný areál U. S. Steel
044 54 Košice
Slovak Republic
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VAT ID: SK7020000119
Commercial Register: District Court Kosice I, Sec.: Sro, File No.: 11711/V
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