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Colorite Hi-Build

UNICOIL > Colorite Hi-Build

Colorite Hi-Build

Colorite Hi-Build Provide a Durable Material for Exterior Applications with Good Formability, Good Chemical Resistance and Corrosion Resistance, Suitable for Highly Aggressive (C4 & C5) Environment Condition.

Standards

  • Substrate : ASTM A653/A653M
  • Paint Coating : ASTM A755/755M
  • * Technical terms and conditions will be applied :

COLORITE Hi-Build is a pre-painted galvanized steel developed to provide a durable material for exterior applications with good formability, good chemical resistance and corrosion resistance, suitable for highly aggressive (C4 & C5) environment condition. The paint is a high build Polyurathene Polyamide system, applied on a Galvanized substrate of Minimum 275 gsm zinc coating, with paint film thickness ranging from 60 microns to 120 microns on weathering side.

Substrate

Galvanized steel G90 (275gsm) Minimum CS Type A&B, FS Type A&B, SS33, SS40 & SS50

Typical Uses

Roofing and walling panels for building in Marine and Industrial environments.

Dimensions: (For normal supply products)

Thickness* (mm) Width** (mm)
From 0.70 to 1.20 From 50 to 1320

* For grade SS50, minimum thickness is 0.50 mm

** For width less than 1000 mm are supplied with slit edge For specific dimensions please contact Sales and Marketing Dept.

Pretreatment Corrosion resistant proprietary conversion coating.
Primer Coat Universal Corrosion inhibitive Primer High Build thickness 30 microns.
Finish Coat Custom formulated system. High Build thickness-30 microns to 90 microns on the top or weather side. The finish coat is available on all RAL standard colours and other colours may be available on request.
Backing Coat Custom formulated Backer-5-7 microns Special backer suitable for foam application can also be provided Back coat can be in the same top coat color and DFT as required
Gloss (60˚) Nominal 20 – 30% (60˚) Other gloss levels may be available on request

Guaranteed Paint Properties

Test Test Method Description Results
Hardness (Pencil) ASTM D 3363 Pencil H or harder
Adhesion -T bend ASTM D 4145 T-bend 1T or less (No Pickoff)
Flexibility ASTM D 4145 T-bend 1T or less (no cracking)
Adhesion – Reverse impact ASTM D 2794 Reverse impact > 10 joules
Cross Hatch ASTM D 3359 Cross hatch > No paint removal
Gloss 60˚ (%) ASTM D 523 Gloss 20 – 30
Color Difference ASTM D2244 Light colors Δ E – ≤1.0
Medium Colors Δ E – ≤ 1.5
Dark Colors Δ E – ≤2.0 / Visual match
Metallics Visual match

Expected Product Service Performance

Property Test Method Description Results
Resistance to UV (QUV-A) ASTM G53 Exposure Hours 2000 Hrs
ASTM D2244 Color Change DE Hunterlab – Light color ≤3 Int.Color ≤5 Dark color ≤7
ASTM D4214 Chalking ASTM Rating 6
ASTM D523 % Gloss Retention ≥ 50
Natural well washed exposure ASTM G7 Exposure Hours 15 Yrs ( C4 & C5)
ASTM D2244 Color Change (Non Vertical) DE Hunterlab – Light color ≤5 Int.Color ≤8 Dark color ≤12
ASTM D4214 Chalking ASTM Rating 6
ASTM D523 % Gloss Retention ≥ 50
Resistance to corrosion (Salt Spray) ASTM B117 Exposure Hours 2000 Hrs
ASTM D714 & ASTM D1654 Blister Density, Size & Corrosion Creep Blister density- Few, Blister size rating ≥8 Undercut from scribe ≤2mm
Resistance to humidity at 38± 1°C ASTM D 2247 Exposure Hours 1000 Hrs
ASTM D714 Blister Density & Size Blister density- Few, Blister size rating ≥8

Resistance to Abrasion		 ASTM D 968 Falling sand test 110 ltrs for 60 µm
ASTM D 4060 Taber abraser 1000g CS10 wheels ≤30 mg per 1000 cycles
ISO 1518 Scratch ≥ 3000gms
Resistane to Heat (ECCA T13) ASTM D2244 90°C – 700 hours or 60°C – 1000 Hours ΔE ≤ 2.5 , ΔGloss ≤ 5%
Kesternich ASTM G87 No. Of Cycles 10, 15 &20 cycles for 60, 90 and 120 microns – No significant blistering. Edge lamination <2mm
Chemical Resistance (Acid & Alkali) AAMA 621 HCL, HNo3 & H2So4 No discoloration/No blistering
Resistance to solvents ASTM D1308 Solvent No discoloration/No blistering
Resistance to Fire BS 476 Part 7 Fire rating Class M0