Test | Ceramapure PL90 | Polyurethane |
SALT SPRAY 5% solution ASTM B 117 | No undercutting at scribe. No damage to panel. 1 year duration | 1- 1/2″ undercutting at scribe. Damage to panel. 3-3/4 months duration. Test Terminated |
TAP WATER IMMERSION 120° F Rated using ASTM D714 |
No undercutting at scribe. No damage to panel. 1 year duration | 3/4″ scribe undercut. 2-1/2 months duration. Test Terminated |
SODIUM HYDROXIDE IMMERSION 25% solution 140° F Rated using ASTM D714 |
No effect after 1 year | Softened film, discoloration and etched surface2-1/2 months, Test Terminated |
CATHODIC DISBONDMENT Attached Cell Method ASTM G-95 30 Days/Average 3 samples |
Less than 2 mm disbondment | 10.0 mm disbondment |
IMPACT RESISTANCE ASTM G-14 |
60 in/lbs | 75 in/lbs |
EXTERIOR EXPOSURE Continuous exterior exposure to weather and sunlight. Birmingham, Alabama | 2.5 years Chalking, negligible loss of film. No effect on metal protection. |
2.5 years Chalking. Negligible loss of film. No effect on metal protection. |
HYDROGEN PEROXIDE IMMERSION 25% Solution 77°F ASTM D-1308 |
No Effect Passed | Large Blisters Failed |