Independent Salt Spray Test of Bronz-Glow Husky Green Fin Coil Protector
The a/c equipment manufacturer embarked on a salt spray evaluation
program. They evaluated condenser coil coatings from several
other vendors. Upon conclusion of the testing Bronz-Glow was
informed of how its coating performed.
The test was based on ASTM B117.85. The test consisted of
continuous exposure of the coated coils to 5% salt solution
at 95° F for 6,300 hours (37.5 weeks). The coils were
removed from the salt chamber to dry on the weekends. The
initial test duration was scheduled for 3,000 hours at the
end of which the test would have been terminated. Testing
of Bronz-Glow Coil Coat, at Bronz-Glow’s request, went
beyond this target stop period of 3,000 hours to 6,300 hours.
The coated coils were of 1,2 and 3 row enhanced fin coils
with 16 fins per inch. The fins were made from 0.0047 aluminum
materials, the hairpins were made from .012 wall rifled copper
tubing, and the end-sheets were made from galvanized steel.
After 6,300 hours of evaluation, the Bronz-Glow Coil Coat
demonstrated excellent resistance to general and galvanic
corrosion. Upon close inspection the fin and tube area were
in excellent condition however, there were some small bubbles
beginning to appear on the galvanized end-sheet. This is considered
minimal based on the longevity of the test and that no corrosion
was found at the junction of the aluminum fin and copper tube
or galvanic intersect.
Back
|
