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  1. josefel

    Brown spots on powder coated brass substrate

    We are having an issue where polyester powder coated brass samples are developing brown spots (almost certainly corrosion) after being powder coated and sitting for a while. The technicians claim they do not see this phenomenon during salt spray and humidity testing. Pinholes? Contamination? I...
  2. josefel

    micro cracks in polymer coating

    Hello, we use a polymer coating on steel and although it comes out of the salt/fog chamber fine, after about 24 hours it shows micro cracks. Any ideas? Thanks in advance.

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