Chromium (Cr)
Rare Earth Metals | Atomic Number: 24
Basic Properties
Cr
24
51.996 g/mol
| Element Category | Rare Earth Metals |
|---|---|
| Atomic Number | 24 |
| Atomic Weight | 51.996 g/mol |
| Crystal Structure | Body-centered cubic (BCC) |
Crystal Structure Visualization
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Description
Chromium is a hard, lustrous metal known for its corrosion resistance and used extensively in stainless steel production.
| Density | 7.19 g/cm³ |
|---|
| Tensile Strength | 280-1400 MPa |
|---|---|
| Hardness | 8.5 Mohs |
| Melting Point | 1907°C |
|---|---|
| Boiling Point | 2671°C |
| Thermal Conductivity | 93.9 W/(m·K) |
| Electrical Conductivity | 7.74 × 10^6 S/m |
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| Corrosion Resistance | Excellent (forms passive oxide layer) |
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Applications
Stainless steel production, chrome plating, superalloys, dyes and pigments
Production Methods
Reduction of chromite ore
History
Discovered in 1797 by Louis Nicolas Vauquelin