Fibre ya karubone ni fibre idasanzwe ikozwe muri karubone, mubisanzwe hamwe na karubone irenze 90%. Ni fibrous, yoroshye kandi irashobora gutunganywa muburyo butandukanye. Ibiranga fibre ya karubone harimo uburemere bwumucyo, imbaraga nyinshi mugihe ukomeje kwisukura cyane, no kurwanya ubushyuhe, ruswa, mugandukira no kugaba. Byongeye kandi, ni byiza cyane kandi byoroshye. Bikoreshwa cyane mubice byinshi nka aerospace, ibicuruzwa bya siporo, amashanyarazi yumuyaga nigituba cyibikoresho nibindi.