There are a couple of things you can do here to get the best results for this. Unfortunately though, at certain viewing angles parts of the reflection are going to carry over.
You can alleviate this by adjusting the roughness in the material to not be so reflective or by adjusting the screen space reflections settings in the post process volume.
For my scene setup I’ve got a sky light, post process, and reflection sphere present.
For my material for the metal I’m using a constant1=0.1 for my roughness, constant1=1 for metal, and constant1=0.25 for base color.
Here is the default settings for all these and the result:
As you can see you can see the edge is similar to your post frame with the post reflecting on the side.
In this next image I’ve adjust the post process screen space reflections intensity to 50 instead of 100.
If adjusting the post process is unacceptable adjustment you can always tweak the roughness setting in the material.
Here I’ve adjusted it from 0.1 to 0.22 for a similar look that was achieved through the post process.
With all that being said, this works really well in my case. There are some variables in all these that may need to be adjusted to fit your specific needs. By changing the roughness in the material and/or adjusting the screen space reflections settings you should be able to get some better results.