Colorite Hi-Build

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 conditions. The paint is a High Build Polyurethane Polyamide system, applied on a Galvanized substrate of Minimum 275 GSM (G90)zinc coating, with paint film thickness ranging from 60µm to 120 µm on weathering side.

Anti-Weathering Limited Warranty: 20 Years (UNICOIL Technical terms and conditions applicable).

Standards

Substrate

Galvanized steel G90 (275gsm)

Standards & Grades

Standard	Description	Sub-Strate Standard	Grades
SASO ASTM A755/ A755M	Standard Specification for Steel Sheet, Metallic Coated by the Hot-Dip Process and Pre-painted by the Coil-Coating Process for Exterior Exposed Building Products	SASO ASTM A653/A653M	CS-Type A, B, C FS Type A, B SS33, SS37, SS50
ASTM A755/ A755M	Standard Specification for Steel Sheet, Metallic Coated by the Hot-Dip Process and Pre-painted by the Coil-Coating Process for Exterior Exposed Building Products	ASTM A653/A653M, ASTM A792/A792M Aluminum Flat coils	CS-Type A, B, C FS Type A, B SS33, SS37, SS50
EN10169	Continuously organic coated (coil coated) steel flat products — Technical delivery conditions	EN 10346	DX51D. DX52DS220GD, S250GD, S280GD, S350GD,
JIS G3312	Pre-Painted Hot Dip Zinc Coated Steel Sheet and Strip	JIS G3302	SGCC, SGCD1 SGC340, SGC440
AS 2728	Prefinished/pre-painted sheet metal products for interior/exterior building applications—Performance requirements	AS 1397	S250, S300, S350,

Typical Uses

Roofing and walling panels for building in Marine and Industrial environments

Dimensions: (For normal supply products)

*Thickness (mm) (TCT-P)**	Width (mm)**	Zinc coating (GSM)
0.55 to 1.20	700 to 1300	275 (G90)

*For width less than 700 mm are supplied with slit edge
For specific dimensions please contact Sales and Marketing Dept.

TCT-P – Total Coated Thickness with Paint Film (Steel thickness + Zinc coating thickness + Paint thickness)

Pretreatment	Corrosion resistant proprietary conversion coating.
Primer Coat	Universal Corrosion inhibitive Primer High Build Primer thickness 30µm.
Finish Coat	Custom formulated high-build Polyurethane and Polyamide system. High Build thickness-30 µm microns to 90 µm on the top or weather side. The finish coat is available on all RAL standard colors and other colors may be available on request.
Backing Coat	Foam compatible epoxy coat or Polyester based custom formulated off white Nominal thickness: 5-7 µm. Back coat can be in the same topcoat color and DFT as required.
Gloss (60˚)	Nominal 25±5% 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	> 9 joules
Cross Hatch	ASTM D 3359	Cross hatch	> No paint removal
Gloss 60˚ (%)	ASTM D 523	Gloss	25±5%
Color Difference	ASTM D2244	Light colors	Visual match
		Medium Colors
		Dark Colors
		Metallics

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
Resistance to corrosion (Salt Spray) ASTM B117	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
Resistance to humidity at 38± 1°C ASTM D 2247	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 (EN13523-13)	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

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Colorite Hi-Build

Standards

Technical Datasheet