Zirconium

Transition metals · Group 4 · Period 5

Atomic properties

Atomic number	40
Symbol	Zr
Standard atomic weight	91.224
Classification	Transition metals
Group	4
Period	5
Block	d-block
Electron configuration	[Kr] 4d2 5s2
Electronegativity (Pauling)	1.33
Common oxidation states	+4

Physical properties

Phase at 20 °C	Solid
Density	6.52 g/cm³
Melting point	1855 °C
Boiling point	4409 °C
Discovered	1789
CAS number	—

Need a material? Ask us for a written proposition.

Any metal, powder, wire, oxide or purity. Stock is held in high-security bonded storage at Zurich Airport — no import duties or VAT while goods stay in bond, any quantity, in-house air, sea, land and express logistics. Written trade inquiries only.