Lub melting point yog dab tsiniobium?
Niobium yog ib qho ntawm tsib cov hlau refractory; Qhov no txhais tau hais tias nws yog resistant rau huab cua kub thiab hnav.
Nws 4491 degree F (2477 degree) melting point ua rau cov hlau no thiab nws cov alloys zoo tagnrho rau kev kub siab thiab kub kub.
