Table of Contents(Page CI-8)

COMMERCIAL/INDUSTRIAL PRODUCT INFORMATION

"6036" COLOR SPECIFICATIONS

A. METAL SUBSTRATE
The base metal is steel manufactured from either high strength Galvalume produced to ASTM A792-AZ50 Grade 50; or HDG produced to ASTM 653-G90 Structural Quality, Grade 50.

B. PRETREATMENT AND BOND COAT
The metal shall be given a pretreatment, prior to finishing, consisting of cleaning and chemical reaction to form an inorganic coating on the metal surface for bonding of the finish. After pretreatment and thorough drying of the surface, a corrosion inhibitive zinc chromate pigmented bond coat shall be applied on the weather side. The bond coat shall provide a continuous coating of 0.15 to 0.2 mil dry thickness and shall be cured by baking prior to application of the color coat.

C. COLOR COAT
After complete curing of the bond coat, the surface shall be given a final color coat. The color coat will be thermsetting straight polyester white or siliconized polyester colors formulated to give optimum adhesion and durability. The color coat shall be applied to yield a total dry film thickness of one (1.0) mil plus or minus 0.2 mil. The color shall be cured by baking to give the performance outlined in "Qualification Tests" and "Exterior Exposure". The interior side of all panels shall be coated with a polyester parchment pigmented base coat enamel over primed treated HDG or Galvalume to a total dry film thickness including primer of 0.5 to 0.65 mil.

D. QUALIFICATION TESTS

1. HARDNESS
Pencil hardness shall be a minimum of H or F, whichever is least hard, using the flattened point of an Eagle Turquoise pencil applied at a 45 degree angle to the panel. Hardness is specified as the softest pencil which fails to penetrate the surface.

2. COLOR
Color shall be matched to approved color standards visually under daylight and horizon light in a Mac-Beth Daylight Booth. Color shall, also, be matched by instrumental match (L, A, B, each less than 0.5) on a Hunter color difference.

3. GLOSS
Gloss rating shall be 35% ±5º as measured on a Glossmeter, in accordance with ASTM D-523.

4. SALT SPRAY RESISTANCE
Salt spray resistance shall be tested using the procedure outlined in ASTM B-117 with 5% neutral salt solution. Panels shall be scored to base metal diagonally across the panel prior to testing with a scribe width of 0.010 to 0.015 inch. After 750 hours exposure there shall be no more than 20% of the exposed area containing blisters larger than No. 8 according to ASTM D-71 4. There shall be no loss of adhesion further than 1/8" from the scribe when tested with Scotch Brand No.610 cellophane tape after four hours from the removal from the cabinet.

5. HUMIDITY RESISTANCE
Humidity resistance shall be tested using a cabinet maintained at 100% relative humidity and 100º F according to ASTM D-2247. After 1,000 hours of exposure of the exterior coat no more than 10% of the exposed area shall contain more than a few No. 8 blisters according to ASTM 0-714. After four hours from recovery there shall be no loss of adhesion according to the standard Scotch Brand No. 610 cellophane tape test.

6. ABRASION RESISTANCE
Abrasion shall be tested by use of 30 liters minimum of falling sand in accordance with ASTM 4145.

7. REVERSE IMPACT ADHESION
Reverse impact shall be tested using a Gardner impact tester with 5/8" steel ball at 80 inch pounds force. When tested at 70-80 degrees F, there shall be no loss of coating adhesion unless caused by failure of the substrate.