There is a lathed metal shader on Highend.
But otherwise, you could also map a 2d fractal texture to a basic metal shader's specular color, and for the "brushed" look, you can adjust the offset of the 2d texture placement node to "strech" it so it looks brushed.
Just my quick 2 cents
Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS