| Diameter[直径] |
20mm |
| Length[长度] |
18 mm |
| Production Method[生产方法] |
Centreless Ground |
| Purity[纯度] |
99.95% |
| Typical Analysis(典型分析) |
| C |
30 PPM |
| Ca |
<20 PPM |
| Cu |
<20 PPM |
| Fe |
20 PPM |
| H |
6 PPM |
| Mg |
<10 PPM |
| Mo |
150 PPM |
| N |
10 PPM |
| Ni |
<20 PPM |
| O |
30 PPM |
| Pb |
<50 PPM |
| Si |
<50 PPM |
| Sn |
<30 PPM |
| Ti |
<20 PPM |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) |
311.0 |
| Bulk modulus ( GPa ) ( Soft ) |
311.0 |
| Hardness - Vickers ( kgf mm?? ) ( Hard ) |
500 |
| Hardness - Vickers ( kgf mm?? ) ( Soft ) |
360 |
| Material condition |
Soft |
| Material condition |
Hard |
| Poisson's ratio ( Hard ) |
0.280 |
| Poisson's ratio ( Soft ) |
0.280 |
| Tensile modulus ( GPa ) ( Hard ) |
411.00 |
| Tensile modulus ( GPa ) ( Soft ) |
411.00 |
| Tensile strength ( MPa ) ( Hard ) |
1920.00 |
| Tensile strength ( MPa ) ( Soft ) |
550.00 - 620.00 |
| Yield strength ( MPa ) ( Soft ) |
550.0 |
| Atomic Properties(原子属? |
| Atomic number |
74 |
| Atomic weight ( amu ) |
183.85000 |
| Crystal structure |
Body Centred Cubic |
| Electronic structure |
Xe4f??5d?6s? |
| Ionisation potential ( No./eV ) |
1 / 7.98 |
| Ionisation potential ( No./eV ) |
2 / 17.7 |
| Natural isotope distribution ( Mass No./% ) |
183 / 14.3 |
| Natural isotope distribution ( Mass No./% ) |
182 / 26.3 |
| Natural isotope distribution ( Mass No./% ) |
186 / 28.6 |
| Natural isotope distribution ( Mass No./% ) |
180 / 0.1 |
| Natural isotope distribution ( Mass No./% ) |
184 / 30.7 |
| Photo-electric work function ( eV ) |
4.55 |
| Thermal neutron absorption cross-section ( Barns ) |
18.5000 |
| Valences shown |
2 ,3,4,5,6 |
| Electrical Properties(电气特? |
| Electrical resistivity ( μOhmcm ) |
5.4@20ℂ/td> |
| Superconductivity critical temperature ( K ) |
0.0154 |
| Temperature coefficient ( K?? ) |
0.00480 @0-100ℂ/td> |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) |
1.12 |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10?? K?? ) |
4.500 @0-100ℂ/td> |
| Latent heat of evaporation ( J g?? ) |
4009 |
| Latent heat of fusion ( J g?? ) |
192.00 |
| Melting point ( C ) |
3410.00 |
| Specific heat ( J K?? kg?? ) |
133.0 @25ℂ/td> |
| Thermal conductivity ( W m?? K?? ) |
173.00 @0-100ℂ/td> |
| Physical Properties(物理性质) |
| Boiling point ( C ) |
5660 |
| Density ( g cm?? ) |
19.300 @20ℂ/td> |
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