Alias have a number of shaders that may help you (including both chrome and brushed metals).

You can find these in the communities section of their site: www.alias.com

If you are using windows, you can download the shaders and extract them to a folder on your hard disk. Then, with Maya open, just drag the shader filr (<shader name>.ma) into your Hypershade window and, after a few seconds, it will appear there.