| Diameter[直径] | 3mm |
| Grade[等级] | Aluminium Alloy 2017 |
| Purity[纯度] | 95.2% |
| Quantity[数量] | 50 Piece - 200 Piece |
| Sphericity[球面] | 5.08μm |
| Type[类型] | Precision Sphere |
| Typical Analysis(典型分析) |
| Cr | 0.05 Percent |
| Cu | 4 Percent |
| Fe | 0.4 Percent |
| Mg | 0.5 Percent |
| Mn | 0.5 Percent |
| Si | 0.4 Percent |
| Zn | 0.2 Percent |
| Atomic Properties(原子属性) |
| Atomic number | 13 |
| Atomic weight ( amu ) | 26.98154 |
| Crystal structure | Face Centred Cubic |
| Electronic structure | Ne3s²3p¹ |
| Ionisation potential ( No./eV ) | 4 / 120 |
| Ionisation potential ( No./eV ) | 5 / 154 |
| Ionisation potential ( No./eV ) | 6 / 190 |
| Ionisation potential ( No./eV ) | 1 / 5.99 |
| Ionisation potential ( No./eV ) | 3 / 28.4 |
| Ionisation potential ( No./eV ) | 2 / 18.8 |
| Photo-electric work function ( eV ) | 4.20 |
| Thermal neutron absorption cross-section ( Barns ) | 0.2320 |
| Valences shown | 3 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 2.67@20℃ |
| Superconductivity critical temperature ( K ) | 1.1750 |
| Temperature coefficient ( K⁻¹ ) | 0.00450 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.42 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) | 75.2 |
| Bulk modulus ( GPa ) ( Soft ) | 75.2 |
| Hardness - Vickers ( kgf mm⁻² ) ( Hard ) | 35 - 48 |
| Hardness - Vickers ( kgf mm⁻² ) ( Soft ) | 21 |
| Material condition | Soft |
| Material condition | Hard |
| Poisson's ratio ( Hard ) | 0.345 |
| Poisson's ratio ( Soft ) | 0.345 |
| Tensile modulus ( GPa ) ( Hard ) | 70.60 |
| Tensile modulus ( GPa ) ( Soft ) | 70.60 |
| Tensile strength ( MPa ) ( Hard ) | 130.00 - 195.00 |
| Tensile strength ( MPa ) ( Soft ) | 50.00 - 90.00 |
| Yield strength ( MPa ) ( Hard ) | 110.0 - 170.0 |
| Yield strength ( MPa ) ( Soft ) | 10.0 - 35.0 |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 2467 |
| Density ( g cm⁻³ ) | 2.700 @20℃ |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 23.500 @0-100℃ |
| Latent heat of evaporation ( J g⁻¹ ) | 10800 |
| Latent heat of fusion ( J g⁻¹ ) | 388.00 |
| Melting point ( C ) | 660.40 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 900.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 237.00 @0-100℃ |
