How fast can i spin 2inch by 12inch round 1018 cold roll steal. I am looking for 10,000rpm?

Check for a circular saw blade rpm specifications of that diameter, would give a good clue with a very decent safety factor. I do not think the larger thickness will impair the number; rather would fortify it, but good balancing would be mandatory.

The kinetic energy of something like that would be considerable (tens of thousands of joules) and good balancing and safety precautions would be essential - even unpowered and braked it would still have enough oomph to rip your arm off

Do you enjoy skinning raccoons for it which are still alive? You Chinese spammers make me SICK.

Yea, you tell 'em Fuzzwood.