In this Unreal engine tutorial, I explain how to create a very realistic chrome material.
The benefits of this method are twofold: 1- you can easily give a patina, a sort of ageing effect. 2 - you can go extremely detailed by using 8K textures.
Depending on the size of the texture in the scene, or if you used 16k images, the level of detail you are then working at is literally microscopic ! In the video below, I show you how doing this in real time gives you incredible amount of control over the fine tweaking.
In order to achieve this material just do the following :