Material settings I have found good for making metal objects

I have recently been making random renders to test making metal meterials with diffrent settings. I have found that with Ray Merror on and with RayMir to .27 and Fresnel to 1.8, it makes it the correct reflectivity. Also with the diffuse shader as Oren-Nay with high Ref value and low Rough value, you can get a good shading. Specular set to CookTorr with medium spec value also works well. Metal Materials work best if they are colored .788, .805, and .815 or similar.The image above was made using a cube, and a bunch of Arrays.  They are supposed to be rails/beams.