Heavy Filament

I did a search but really didn’t find what I was looking for. A part that I am building I would like it to have some weight. I saw that copper, bronze and a stainless steel pla are available. So what I would like to know do these filaments actually have some weight to them. Does anyone have a sample that can get me the weight differences?

Joel did a comparison a few months ago, he does not say it but I assume the 4 prints were done with the same layer and infill settings.

That is what I was looking for thank you!