Quote Originally Posted by Mark D View Post
The gold heatsinks are made of aluminum and finished with gold chem film. It's a type of chromate conversion coating used to protect the aluminum from oxidation / corrosion. It's a similar process to how zinc plated steel parts are finished to look yellow after zinc plating. It's tough to find places these days that will still provide gold chem film coatings because it typically requires hexavalent chromium. Most places now only provide trivalent chrome conversion coatings because of industry standards and toxicity of the hex chromium. Some places that offer trivalent conversion coatings will add a yellow dye to simulate hex chrome, but it doesn't look exactly the same.

Just wanted to give a bit of an update to everybody, I went and found a place that will do the coating (Santa Clara Plating Co) and they looked pretty nice when they came back. My phone wasn't able to capture the actual color very well, but I think that they look really good myself.


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