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Formula: Cr
Form: Pellet/Lump
Material: Chromium
CAS Number: 7440-47-3
Commodity: Metals
Chromium Pellets are compact, high-purity metallic units designed for controlled addition in metallurgical, surface engineering, and advanced manufacturing processes. They are prized for their exceptional hardness, corrosion resistance, and ability to enhance wear performance in alloys and coatings. The pelletized form allows precise dosing, uniform melting, and minimal contamination, making them ideal for applications across aerospace, automotive, and specialty steel industries. Technologies that particularly benefit from chromium pellets include stainless steel alloying for improved mechanical properties, electroplating baths for hard, wear-resistant coatings, and powder metallurgy blends for producing high-strength, corrosion-resistant components. Research focuses on refining pellet purity, size uniformity, and surface chemistry to maximize efficiency in both reactive and structural applications. Their combination of process control, mechanical robustness, and chemical stability ensures chromium pellets remain a critical input for innovation in industrial metallurgy and high-performance materials science.
Tolerances
Pellets
| Maximum Lump Size | Nominal |
|---|
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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