Aluminum vs. Steel Performance Tests

PVDF finishes will meet the following performance criteria:

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Property Result - AluminumResult - SteelTest Designation
60° Specular Gloss:25-40 25-40ASTM D 523
Pencil Hardness:HB-2HHB-2HASTM D 3363
NCCA 11-12
Flexibilty: T-Bend2-T (1)2-T (1)ASTM D 4145, (NCCA 11-19)
No cracking or tape removal of film
MandrelNo crackingNo crackingASTM D 522
180 bend around 1/8" mandrel
Adhesion:ImpactAcceptable (2)Acceptable (2)ASTM D 3359, (NCCA 11-5)
Reverse ImpactAcceptable (2)Acceptable (2)ASTM D 2794, (NCCA 11-6)
Abrasion:Falling Sand50 liters minimum50 liters minimumASTM D 968
TransitNo disfigurementNo disfigurementMethod A
Acid Pollutants:No effectNo effectASTM D 1308, Proc. 6.2
10% Muriatic acid, 15 min.
No effectNo effectASTM D 1308, Proc. 6.2
20% sulfuric acid, 18 hrs.
<5 u. color change Hunger ΔE units<5 u. color change Hunger ΔE unitsAAMA 2605, TEST # 7.7.3.3
70 nitric acid vapors, 30 min.
Acid Rain Test:10 cycles minimum
No objectionable color change
10 cycles minimum
No objectionable color change
KESTERNICH
Sulfur dioxide cyclic test
Accelerated Tests:
Weatherometer, 3000 hrs. exposureAcceptable (3)Acceptable (3)ASTM D 822, G 155
Weatherometer
Dew Cycle Weatherometer, 500 hrs. exposureAcceptable (3)Acceptable (3)ASTM D 3361
Humidity, 100% relative humidity @ 95°F.Passes 3000 hrs. (4)Passes 1500 hrs. (4)ASTM D 2247
Salt Spray, 5% salt fog @ 95°F.Passes 3000 hrs. (5)Passes 1000 hrs. (5)ASTM B 117 (NCCA 111-2)
Cyclic Salt Fog/UV Exposure TestPasses 2016 hrs. (6)Passes 2016 hrs. (6)ASTM D 5894