Make sure you ask them to keep it covered.
mine was the last delivery of the day and it didnt come with any plastic film to protect it, no only that but it was bottom of the pile so as stuff got taken off the lorry, both my sheets got scratched to bugger

Did you complain?

What are you painting your chassis with - that black looks nice.

Cheers,

Pat...

I was asking around for places to buy Alloy recently and received this reply.
I dont know how much truth there is in these statements,but ( thought I would share it with you).

Don't want to sound funny, but make sure whoever you buy from can advise you on what you need. There is pure aluminium sheet which if fully annealed is so soft as to be super easy to work and shape and therefore dent, there are all sorts of alloys available in all stages of heat treatment from full anneal ( usually referred to as T zero ) to hardened ( T six and up ). Sometimes these are simplified to soft, half hard and hard. A lot of commercial alloys are also very corrosion prone in bare state, alclad has a pure alu layer on top to protect it. Non clad alloys to aviod would be 20xx and 50xx types ( ie 2024, 5056 ). I ended up with some stuff called HE 30 which was half hard and easy to form but I can't find any corrosion data for it! Hope I am not teaching you to suck eggs!!!

Yes i complained and basically they said sorry but wouldnt exchange it