What type of aluminum are the FFR wheel spinners?

[DaleG]

Talked to Future Weld in PHX today about anodizing my hub spinners. He would like to know what type/grade aluminum they are made of (apparently makes a difference in how they are treated to get the correct color. These: http://www.factoryfiveparts.com/halibrand-replica-wheel-right-hand-threaded-spinner/

If no one knows, I'll call FFR in the morning.

[DaleG]

Called FFR, talked to Jay. While I was on the phone he called the mfg.; they are cast, but will dig for the grade and call back. Will let all know here when I get the answer.

[DaleG]

Haven't gotten the call back yet, but did talk to the anodizer and he said "cast" was all he needed to know.

[HCP 65 COUPE]

IF they are cast aluminum they are most likly A-356 but somtimes parts that get polished get cast from a differant alloy. Most aluminum castings are A-356 tho.