The aluminum alloy is 5052-H32, probably sort of generic stuff. I never heard the term white rust, although when I run a cloth over some bare aluminum it comes back gray...is that oxide?
The plastic that is "good" and does not turn white is a UL F1 material. Turns out the "bad" plastic is not...
I have a several black plastic parts as part of a product that is placed in a large aluminum housing that is outdoors. The aluminum housing is painted on the outside, and the plastic is all exposed to the sun and weather. After several months, one particular plastic part becomes sort of...
