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Composition: Cr
Form: Bar
Material: Chromium
CAS Number: 7440-47-3
Commodity: Metals
Purity:
99.7%
Side Length:
2mm
Side Length (Of Longer Side):
2mm
Length:
100mm
Chromium Bar is a high-strength metallic form known for its exceptional hardness, corrosion resistance, and ability to maintain structural integrity under mechanical stress. It possesses a low friction coefficient and excellent chemical stability, making it well-suited for applications in harsh or corrosive environments. The bar form is particularly advantageous for machining, structural reinforcement, and precision component fabrication. Industries such as aerospace, automotive, manufacturing, and energy rely on chromium bars for wear-resistant components, load-bearing assemblies, and high-performance tooling. Specific technologies that benefit from chromium bar include precision bearings, turbine shafts, and electroplated structural parts where long-term resistance to oxidation and abrasion is essential. Research continues to explore chromium’s integration into advanced coatings, hybrid alloys, and engineered surface treatments to enhance durability and efficiency in extreme service conditions. Its combination of mechanical performance, corrosion resistance, and adaptability ensures its enduring role in industrial and scientific advancements.
Tolerances
Bar
| Side Length | =<10mm | ±10% |
|---|---|---|
| Side Length | >10mm | ±1mm |
| Side Length (Of Longer Side) | >10mm | ±1mm |
| Side Length (Of Longer Side) | =<10mm | ±10% |
| Length | <100mm | ±1mm |
| Length | >=100mm | +5% / -1% |
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 24 |
| Crystal structure | Body centred cubic |
| Electronic structure | Ar 3d⁵ 4s¹ |
| Valences shown | 2, 3, 6 |
| Atomic weight( amu ) | 51.996 |
| Thermal neutron absorption cross-section( Barns ) | 3.1 |
| Photo-electric work function( eV ) | 4.4 |
| Natural isotope distribution( Mass No./% ) | 50/ 4.35 |
| Natural isotope distribution( Mass No./% ) | 52/ 83.79 |
| Natural isotope distribution( Mass No./% ) | 54/ 2.36 |
| Natural isotope distribution( Mass No./% ) | 53/ 9.5 |
| Atomic radius - Goldschmidt( nm ) | 0.128 |
| Ionisation potential( No./eV ) | 4/ 49.1 |
| Ionisation potential( No./eV ) | 3/ 31.0 |
| Ionisation potential( No./eV ) | 1/ 6.77 |
| Ionisation potential( No./eV ) | 6/ 90.6 |
| Ionisation potential( No./eV ) | 2/ 16.5 |
| Ionisation potential( No./eV ) | 5/ 69.3 |
Mechanical Properties
| Element | Value |
|---|---|
| Material condition | Hard |
| Material condition | Soft |
| Poisson's ratio | 0.21 |
| Poisson's ratio | 0.21 |
| Bulk modulus( GPa ) | 160.2 |
| Bulk modulus( GPa ) | 160.2 |
| Tensile modulus( GPa ) | 279 |
| Tensile modulus( GPa ) | 279 |
| Hardness - Vickers( kgf mm⁻² ) | 130 |
| Hardness - Vickers( kgf mm⁻² ) | 220 |
| Tensile strength( MPa ) | 689 |
| Tensile strength( MPa ) | 103 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 13.2@20@20°C |
| Temperature coefficient( K⁻¹ ) | 0.00214@0-100°C |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 2672 |
| Density( gcm⁻³ ) | 7.1@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1857 |
| Latent heat of evaporation( J g⁻¹ ) | 6580 |
| Latent heat of fusion( J g⁻¹ ) | 260 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 518@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 94@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 6.5@0-100°C |
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