Now here's the fun part, the material :)

It's not an accurate metal at all it's all faked !

First of all there's specularity (now you clearly see those 4 points lights and their effect)



Then you add some fresnel in the luminosity channel (to get more highlights)



Now here's just the reflection channel, it's boring and dull !



But here's the result with specularity + fresnel added to that reflection channel... Yummy :)