Hardness: Raws li Mohs hardness teev ntawm 10 cov ntsiab lus, rutile titanium dioxide yog 6-6.5, anatase titanium dioxide yog 5.5-6.0, yog li anatase yog siv tshuaj fiber ntau matting kom tsis txhob muaj qhov ntxig ntawm spinneret qhov.
Melting point thiab kub taw tes: Txij li ob qho tib si anatase thiab brookite hom titanium dioxide yuav hloov mus rau hauv rutile yam ntawm qhov kub, qhov chaw melting thiab kub taw tes ntawm brookite hom thiab anatase hom titanium dioxide tsis muaj tiag. Tsuas yog rutile titanium dioxide muaj melting taw tes thiab rwg taw tes. Lub ntsiab lus melting ntawm rutile titanium dioxide yog 1850 ° C, lub ntsiab lus yaj hauv huab cua yog (1830 ± 15) ° C, thiab lub ntsiab lus yaj ntawm oxygen ntxiv yog 1879 ° C. Lub ntsiab lus melting cuam tshuam txog kev coj dawb huv ntawm titanium dioxide. Cov ntsiab lus kub ntawm rutile titanium dioxide yog (3200 ± 300) K, thiab titanium dioxide yog me ntsis tsis txaus ntseeg ntawm qhov kub no.
