Aluminum alloy number for a gold 470 mast?

[jfhelmer]

I have a 470 mast that needs a welded repair and am hoping someone might know the aluminum alloy number. It is gold and probably original equipment on a 1971 Vanguard. Thank you.

John F. Helmer
helmer.john.f@gmail.com

[Scott Fox]

Guess is 6000 but that is only a guess