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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


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Ultraviolet test for Black anodising fade-resistance




Dear SIR,

WHAT TYPE OF ULTRAVIOLET TEST WE CAN CARRY FOR ULTRAVIOLET TEST FOR COMPONENTS ARE GETTING FADED COLOUR WHEN EXPOSE TO SUN LIGHT.generally WHAT TYPE OF TEST IS USED FOR SUCH TYPE OF PROBLEM.

KAMLESH BHATT
PLATING MANAGER - PUNE, MAHARASTRA, INDIA
August 5, 2009



First of two simultaneous responses --

Step 1 is to get the best fade resistant dye (they have ratings) and then give it an excellent seal.

I am not aware of a global test for fading, but you could design your own by using test cells with intense fluorescent lamps and another with a xenon lamp.

James Watts
- Navarre, Florida
August 6, 2009



Second of two simultaneous responses -- August 6, 2009

Kamlesh

Consider ASTM G23, ASTM G26, or ASTM D822. These are the test methods specified by MIL-A-8625 / MIL-PRF-8625 [on DLA] for light fastness evaluation.

Willie Alexander
- Colorado Springs, Colorado




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