Another detail that helps is to have your reflections rapidly distort/fade/whiplash when they hit the radius/edge of the chrome surface. This applies to all glossy surfaces. Notice it happening on the buttons and glass window of this phone. The glass shows gradual curvature. The buttons show how a shadow/highlight can sharpy bend when it hits a small radius. The sharper the value disappears or distorts, the sharper the radius you’re communicating.
Don’t forget the importance of observation. I find I’m still getting better at rendering, even though I don’t do it consciously, just because I can discern what doesn’t look real enough, and how it can feel more real. EG, google image search chrome hair dryers and look at 5-10 examples. Look at one in real life at the store, other chrome stuff on cars and motorcycles in parking lots, etc…
