MALAYSIA
This literature supersedes all previous issues.
GENERAL DESCRIPTION
Clean COLORBOND® ULTRA MATT prepainted steel,
prepainted steel, specifically designed by BlueScope,
combines long term durability and exceptional
corrosion resistance. To determine if warranties apply,
please contact your nearest BlueScope sales office
for advice.
TYPICAL USES
Exterior building profiles in applications requiring low gloss finish and excellent
corrosion resistance. Suitable from moderate to severe marine or industrial environment.
For material selection advice, please contact your nearest BlueScope sales office.
AUSTRALIAN STANDARD
Substrate – AS 1397
Paint Coating – AS/NZS 2728
PREFERRED SUBSTRATES:
ZINCALUME® G550S AZ200 steel (Zinc/Aluminium alloy-coated steel).
ZINCALUME® G300S AZ200 steel (Zinc/Aluminium alloy-coated steel).
PRETREATMENT:
Corrosion resistant proprietary conversion coating.
PRIMER COAT:
Universal corrosion inhibitive primer. Nominal dry film thickness 5µm each side.
FINISH COAT:
Custom formulated polyester paint system with inorganic pigments. Nominal dry film thickness 20µm on the top or weather side.
The finish coat can, if required, be applied to both sides to provide a double-sided product.
BACKING COAT:
Custom formulated Bass Grey. Nominal dry film thickness 10µm.
COLOUR:
A range of standard colours is available. Other specially required colours may be available on request.
Finish Coat (Nominal 20µm)
Corrosion Inhibitive Primer (Nominal 5µm)
Conversion Coating
ZINCALUME® AZ200 steel Substrate
Conversion Coating
Corrosion Inhibitive Primer (Nominal 5µm)
Backing Coat (Bass Grey, Nominal 10µm)
DIMENSIONS: (For normal supply product)
ZINCALUME® G550S AZ200 steel
Preferred base metal
Strip width range,
thickness, mm*
mm
ZINCALUME® G300S AZ200 steel
Preferred base metal
Strip width range
thickness, mm*
mm
0.35
610 – 1219
0.35
610 – 1219
0.42, 0.48, 0.50, 0.55
610 – 1219
0.42, 0.48, 0.50, 0.55
610 – 1219
0.60, 0.75, 0.80
610 – 1219
0.60, 0.80
610 – 1219
*Any other sizes may be available on request
RESISTANCE TO DIRT STAINING
The change in appearance of normal coil-coated products due to weathering is expected to be minimal within one year of installation. Yet, the overall
appearance change can be large in some environments, not as a result of changes in the paint system itself, but as a result of severe dirt pick-up which
causes darkening of its surface. This effect is more pronounced on light colours than on dark colours. Some atmospheric dirt can actually become
engrained into the surface of the paint, causing dirt staining which is difficult to remove.
Clean COLORBOND® ULTRA MATT steel is resistant to dirt pick-up and more importantly, RESISTANT to DIRT STAINING.
The appearance change of normal coil-coated products and Clean COLORBOND® ULTRA MATT steel in environments where atmospheric dirt is known to
cause dirt-staining problems has been monitored. The samples tested after one year of exposure were not cleaned of dirt or other contaminants but had
been exposed to rainfall during the test period. The benefits of using Clean COLORBOND® ULTRA MATT steel in this type of environment are clearly evident
as shown in TABLE 1 below.
TABLE 1 – 12 month sample exposure comparisions
Colour Shade
Typical Appearance Change (ΔE units CIELAB 2000)
Normal coil-coated products
Clean COLORBOND® ULTRA MATT steel
Light (eg. Cloudy Matt)
10 - 20
≤5
Intermediate (eg. Oceania Matt)
5 - 10
≤3
TYPICAL PROPERTIES
Specular Gloss (60˚)
7 ± 3 units (AS/NZS 1580.602.2; ASTM D523)
Scratch Resistance
Good, typically 2000g (AS 2331.4.7)
Reverse Impact
≥10 Joules (AS/NZS 2728 App. E)
Pencil Hardness
HB minimum (AS/NZS 1580.405.1)
T-Bend Adhesion
6T maximum (AS/NZS 2728 App. F)
Heat Resistance
Suitable for continuous service up to 100˚C. Continuous service at higher temperatures may cause some
colour change of the paint film.
≤ 20mg paint removal per 100 cycles (AS/NZS 1580.403.2)
Taber Abrasion Resistance
TABLE 2 – Early fire hazard ratings (AS/NZS 1530.3)
INDEX
Ignitability Index
Spread of Flame Index
Heat Evolved Index
Smoke Evolved Index
RATING
0
0
0
0-1
RANGE
0 - 20
0 - 10
0 - 10
0 - 10
EXPECTED PRODUCT SERVICE PERFORMANCE
Film Integrity
Clean COLORBOND® ULTRA MATT steel under normal well-washed exposure conditions should show no cracking (other
than that which may occur during forming), flaking or peeling of the paint for 15 years.
Change in Appearance The appearance of Clean COLORBOND® ULTRA MATT steel and other coil-coated products can change over time on exterior
weathering not only due to pick-up of dirt but also to changes in the paint system itself such as gloss loss, chalking and fading of
pigmentation.
Colour change, which is largely due to the changes in pigmentation will depend on the colour chosen. It is measured using a
spectrophotometer, according to ASTM D-2244 on surfaces thoroughly cleaned of dirt, chalk, oxidised film and foreign
contaminants. The typical appearance change of standard Clean COLORBOND ® ULTRA MATT steel colours in normal
environments after 10 years of service are given in TABLE 3 below.
TABLE 3 - Expected colour change after 10 years in natural well-washed exposure (AS/NZS 1580.457.1 & ASTM D-2244)
Colour Shade
Typical Appearance Change (ΔE units CIELAB 2000)
Intermediate (eg. Oceania Matt)
≤6
Dark (eg. Ruby Matt)
≤ 10
Note: Improper storage or use of non-approved rollforming lubricants may adversely affect colour stability. Wet storage should be avoided, however,
materials which become wet while in bundles should be separated and allowed to dry. (refer AS/NZS 2728 Appendix L)
Colour Change Resistance
(QUV 2000 hours)
ΔE units CIELAB 2000: Intermediate Colour : ≤ 5 unit (ASTM G154 & ASTM D-2244)
Corrosion Resistance
(Salt Spray 1000 hours)
Blister density: ≤ 2; Blister size: ≤S3; Undercut from a score: ≤2mm. No loss of adhesion or corrosion. (AS/NZS 2728 App. I)
Humidity Resistance
(Cleveland 500 hours)
Blister density: ≤ 3; Blister size: ≤ S2; No loss of adhesion or corrosion. (ASTM D4585)
Chalking Resistance
(QUV 2000 hours)
Chalk rating: ≤ 4 (ASTM G154 & AS/NZS 1580.481.1.11 (Method B).
Chemical Resistance
The integrity of the paint film on Clean COLORBOND ® ULTRA MATT steel is expected to be largely unaffected by
accidental spillage of solvents such as methylated spirits, white spirits, mineral turpentine, toluene, trichloroethylene and
dilute acids and alkali as long as these spillage are removed immediately by wiping or washing. However, contact with
certain of these chemicals may reduce the resistance of the product to dirt pick-up.
Use Under
Adverse Conditions
If it is intended to use Clean COLORBOND ® ULTRA MATT steel in an exterior application within 1 km of salt marine
locations, severe industrial or unusually corrosive environment, in areas not washed by rain, or in end uses where it will
be wholly or partly buried in the ground, please contact your BlueScope sales office for specialised advice.
Note: Customers should use product promptly (within 6 months) to avoid the possibility of storage related corrosion.
Please ensure you have the current data sheet for this product.
NS BlueScope Malaysia Sdn. Bhd. (223136-P)
(Formerly known as BlueScope Steel (Malaysia) Sdn. Bhd.)
Lot 1551, Jalan Bukit Kapar, 42200 Kapar, Selangor Darul Ehsan, Malaysia.
Tel: +60 3 3361 6888 Fax: +60 3 3361 6889 Website: www.bluescopesteel.com.my
ZINCALUME® and COLORBOND® are registered trade marks of BlueScope Steel Limited.
BlueScope is a trade mark of BlueScope Steel Limited.
Copyright © 2013 by NS BlueScope Malaysia Sdn. Bhd. All rights reserved.