Black Anodize Turning Brown(2001)
Has anyone heard of black anodize, class II type II turning brown? If the seal was not good enough, would it cause the browning?Daryl Gillum
- Santa clara, California
First of two simultaneous responses-- (2001)
Poor seal and/or exposure to U.V. light can fade the color. Have a sample part seal tested. One such test is dye absorption. Check with your local anodiser to see if they offer this.
Good luck,Bill Grayson
- Santa Cruz, California, USA
Second of two simultaneous responses-- (2001)
You did not say the conditions for turning the black color into a brown color. I have seen the black parts that are well sealed turn to brown color under a temperature of 80 C for 20- minutes. This has to do with the heat resistance of the black dye.S. Y. Yuen
- Hong Kong, China
September 10, 2008
I have a similar problem w/some parts from my customer turning brown. Did you happen to find the cause of this problem.
- San Jose, California
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