my understanding that Carbonium is not like the Carbon used by AP. "Carbonium® is composed of the aeronautical grade carbon fibers used to make vital structural parts of modern aircraft. It is roughly twice as light as aluminum and twice as environmentally friendly as conventional carbon composite. This is because, unlike most composites, it is not made of virgin materials; 95% of it is eco-sourced from carbon by-products in the aeronautical cycle.
The innovative process development used to up-cycle aerospace grade carbon material is based on three patents led by its France-based start-up company, Lavoisier Composites.
The result is a carbon-based composite material of unprecedented mechanical performance with a much reduced environmental footprint. " source
dunesmagazine.com m
So far is very pleasant and light. I hope it will age well too