Polycrystalline fiber bulk e na le density e tlase, conductivity e tlase ea mocheso, ho hanyetsa mocheso o motle, mocheso o phahameng oa ho sebetsa, botsitso ba lik'hemik'hale, li-anti-corrosion tse ntle joalo-joalo, e sebelisoa haholo indastering ea metallurgy, kaho, ceramics, aerospace, sesole joalo-joalo.