While TFP has plenty of textures in the catalog, often we need something special/extra and "making your own" via photograph, which works, is work; especially finding the right image to photograph.
Ran across these images...copper and other metals....yours to download...
http://www.psd-dude.com/tutorials/resources/15-copper-textures.aspx
These, like many photos, are not "seamless" but can be made so easily in Photoshop.
Other resources found by Google search for textures, images
You can add these to catalog or to individual project files.