Cobalt (Co)
Rare Earth Metals | Atomic Number: 27
Basic Properties
Co
27
58.933 g/mol
| Element Category | Rare Earth Metals |
|---|---|
| Atomic Number | 27 |
| Atomic Weight | 58.933 g/mol |
| Crystal Structure | Hexagonal close-packed (HCP) |
Crystal Structure Visualization
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Description
Cobalt is a hard, lustrous metal used in high-temperature alloys, magnets, and lithium-ion batteries.
| Density | 8.86 g/cm³ |
|---|
| Tensile Strength | 300 MPa |
|---|---|
| Hardness | 4 Mohs |
| Melting Point | 1495°C |
|---|---|
| Boiling Point | 2927°C |
| No electrical properties data available |
| Corrosion Resistance | Good |
|---|
Applications
Used in batteries, magnets, and superalloys.
Production Methods
Obtained as a byproduct of nickel and copper mining.
History
Known since ancient times; important in modern industry.