Steel is at 80% https://pubs.usgs.gov/periodicals/mcs2021/mcs2021-iron-steel-scrap.pdf https://pubs.usgs.gov/periodicals/mcs2021/mcs2021-iron-steel... PET is

Steel is at 80% https://pubs.usgs.gov/periodicals/mcs2021/mcs2021-iron-steel-scrap.pdf https://pubs.usgs.gov/periodicals/mcs2021/mcs2021-iron-steel... PET is at 30% https://www.epa.gov/facts-and-figures-about-materials-waste-and-recycling/plastics-material-specific-data https://www.epa.gov/facts-and-figures-about-materials-waste-... Is your particular bottle going to be part of the 20%? IDK... but it's more likely by definition that the PET one is going to be part of the 70%, and is also more damaging in every possible way. Except when dropping it on your foot.