Re: Hub Cap CLOISSONE

Posted by Owen_Dyneto On 2015/11/9 16:32:04

West, by "chrome" in paint I assume you're referring to the yellow paint tinting pigment lead chromate (CrPbO4). It wasn't particularly color-stable and tended to oxidize and darken over time; it was pretty much replaced by "Cadmium Yellow" as a paint pigment though I don't know when that changeover might have occurred and if it's even relevant to this topic. But as to a shortage of chromium itself as a metal in the 30s, I don't think that's an explanation for any change in paint formulations that might or might not have occurred with automotive paints - just looking a cars and industrial metallurgical production in the '30s, chromium was plentiful.