| Diameter[直径] | 2mm |
| High Purity[纯度] | 99.999% |
| Length[长度] | 100 mm - 1000 mm |
| Typical Analysis(典型分析) |
| Bi | 1 PPM |
| Cd | 1 PPM |
| Pb | 5 PPM |
| Atomic Properties(原子属性) |
| Atomic number | 50 |
| Atomic weight ( amu ) | 118.69000 |
| Crystal structure | Tetragonal |
| Electronic structure | Kr4d¹⁰5s²5p² |
| Ionisation potential ( No./eV ) | 2 / 14.63 |
| Ionisation potential ( No./eV ) | 5 / 72.3 |
| Ionisation potential ( No./eV ) | 3 / 30.5 |
| Ionisation potential ( No./eV ) | 4 / 40.7 |
| Ionisation potential ( No./eV ) | 1 / 7.34 |
| Natural isotope distribution ( Mass No./% ) | 122 / 4.6 |
| Natural isotope distribution ( Mass No./% ) | 124 / 5.6 |
| Natural isotope distribution ( Mass No./% ) | 114 / 0.7 |
| Natural isotope distribution ( Mass No./% ) | 120 / 32.4 |
| Natural isotope distribution ( Mass No./% ) | 118 / 24.3 |
| Natural isotope distribution ( Mass No./% ) | 112 / 1.0 |
| Natural isotope distribution ( Mass No./% ) | 116 / 14.7 |
| Natural isotope distribution ( Mass No./% ) | 115 / 0.4 |
| Natural isotope distribution ( Mass No./% ) | 117 / 7.7 |
| Natural isotope distribution ( Mass No./% ) | 119 / 8.6 |
| Photo-electric work function ( eV ) | 4.30 |
| Thermal neutron absorption cross-section ( Barns ) | 0.6300 |
| Valences shown | 2 ,4 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Polycrystalline ) | 58.2 |
| Hardness - Mohs ( Polycrystalline ) | 1.50 - 1.80 |
| Material condition | Polycrystalline |
| Poisson's ratio ( Polycrystalline ) | 0.357 |
| Tensile modulus ( GPa ) ( Polycrystalline ) | 49.90 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 12.6@20℃ |
| Superconductivity critical temperature ( K ) | 3.7220 |
| Temperature coefficient ( K⁻¹ ) | 0.00460 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.42 |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 2270 |
| Density ( g cm⁻³ ) | 7.280 @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 ) | 2497 |
| Latent heat of fusion ( J g⁻¹ ) | 59.60 |
| Melting point ( C ) | 231.90 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 213.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 66.80 @0-100℃ |
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