Coil Width[卷材宽度] |
305mm |
Diameter[直径] |
4mm - 50mm |
Purity[纯度] |
99.95% |
Temper[状态] |
As Rolled |
Thickness[厚度] |
0.25mm |
Typical Analysis(典型分析) |
Ag |
20 PPM |
Bi |
100 PPM |
Cd |
2 PPM |
Cu |
20 PPM |
Fe |
2 PPM |
Mg |
<1 PPM |
Sn |
70 PPM |
Tl |
5 PPM |
Thermal Properties(热性能) |
Coefficient of thermal expansion ( x10?? K?? ) |
29.000 @0-100℃ |
Latent heat of evaporation ( J g?? ) |
862 |
Latent heat of fusion ( J g?? ) |
23.20 |
Melting point ( C ) |
327.50 |
Specific heat ( J K?? kg?? ) |
159.0 @25℃ |
Thermal conductivity ( W m?? K?? ) |
35.30 @0-100℃ |
Atomic Properties(原子属性) |
Atomic number |
82 |
Atomic weight ( amu ) |
207.20000 |
Crystal structure |
Face Centred Cubic |
Electronic structure |
Xe4f??5d??6s?6p? |
Ionisation potential ( No./eV ) |
5 / 68.8 |
Ionisation potential ( No./eV ) |
3 / 31.9 |
Ionisation potential ( No./eV ) |
4 / 42.3 |
Ionisation potential ( No./eV ) |
2 / 15.03 |
Ionisation potential ( No./eV ) |
1 / 7.42 |
Natural isotope distribution ( Mass No./% ) |
207 / 22.1 |
Natural isotope distribution ( Mass No./% ) |
208 / 52.4 |
Natural isotope distribution ( Mass No./% ) |
206 / 24.1 |
Natural isotope distribution ( Mass No./% ) |
204 / 1.4 |
Photo-electric work function ( eV ) |
4.00 |
Thermal neutron absorption cross-section ( Barns ) |
0.1800 |
Valences shown |
2 , 4 |
Electrical Properties(电气特性) |
Electrical resistivity ( μOhmcm ) |
20.6@20℃ |
Superconductivity critical temperature ( K ) |
7.1960 |
Temperature coefficient ( K?? ) |
0.00420 @0-100℃ |
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) |
0.44 |
Mechanical Properties(机械性能) |
Bulk modulus ( GPa ) ( Polycrystalline ) |
45.8 |
Bulk modulus ( GPa ) ( Sand cast ) |
45.8 |
Hardness - Mohs ( Sand cast ) |
1.50 |
Material condition |
Polycrystalline |
Material condition |
Sand Cast |
Poisson's ratio ( Polycrystalline ) |
0.440 |
Poisson's ratio ( Sand cast ) |
0.440 |
Tensile modulus ( GPa ) ( Polycrystalline ) |
16.10 |
Tensile modulus ( GPa ) ( Sand cast ) |
16.10 |
Tensile strength ( MPa ) ( Sand cast ) |
12.00 |
Yield strength ( MPa ) ( Sand cast ) |
5.5 |
Physical Properties(物理性质) |
Boiling point ( C ) |
1740 |
Density ( g cm?? ) |
11.350 @20 |