27 seamaster option for Monel fuel tank

[Jeff79Sceptre]

I was wondering why no one uses Monel for a fuel tank? My grandfather worked at a paper mill and brought a 55 gallon drum home once. I know for a fact it lasted 20+ years without rusting at ALL. We used it to burn fires in and it makes stainless look like sheet metal. Probably works too well......unlike the government!