Tsirkooniumi
Tsirkooniumi is the Finnish name for the chemical element zirconium, which has the symbol Zr and atomic number 40. It is a lustrous, silvery-white, strong transition metal that is resistant to corrosion. Zirconium is found in various minerals, with zircon (zirconium silicate, ZrSiO4) being the most commercially important source. It is relatively abundant in the Earth's crust.
In its pure form, zirconium is soft, but when alloyed with other elements, it becomes significantly stronger
The primary uses of zirconium include its application in nuclear reactors, where it is used in fuel