| Maximum Lump Size[] |
10mm |
| Purity[纯度] |
99.0% |
| Weight[重量] |
20 g - 200 g |
| Atomic Properties(原子属性) |
| Atomic number |
20 |
| Atomic weight ( amu ) |
40.08000 |
| Crystal structure |
Face Centred Cubic |
| Electronic structure |
Ar4s? |
| Ionisation potential ( No./eV ) |
2 / 11.87 |
| Ionisation potential ( No./eV ) |
6 / 109 |
| Ionisation potential ( No./eV ) |
1 / 6.11 |
| Ionisation potential ( No./eV ) |
4 / 67.1 |
| Ionisation potential ( No./eV ) |
3 / 50.9 |
| Ionisation potential ( No./eV ) |
5 / 84.4 |
| Natural isotope distribution ( Mass No./% ) |
40 / 96.941 |
| Natural isotope distribution ( Mass No./% ) |
43 / 0.135 |
| Natural isotope distribution ( Mass No./% ) |
44 / 2.086 |
| Natural isotope distribution ( Mass No./% ) |
48 / 0.187 |
| Natural isotope distribution ( Mass No./% ) |
42 / 0.647 |
| Natural isotope distribution ( Mass No./% ) |
46 / 0.004 |
| Photo-electric work function ( eV ) |
2.87 |
| Thermal neutron absorption cross-section ( Barns ) |
0.4400 |
| Valences shown |
2 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) |
3.7@20℃ |
| Temperature coefficient ( K?? ) |
0.00457 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) |
-0.51 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) |
17.2 |
| Bulk modulus ( GPa ) ( Soft ) |
17.2 |
| Hardness - Vickers ( kgf mm?? ) ( Soft ) |
17 |
| Material condition |
Hard |
| Material condition |
Soft |
| Poisson's ratio ( Hard ) |
0.310 |
| Poisson's ratio ( Soft ) |
0.310 |
| Tensile modulus ( GPa ) ( Hard ) |
19.60 |
| Tensile modulus ( GPa ) ( Soft ) |
19.60 |
| Tensile strength ( MPa ) ( Hard ) |
115.00 |
| Tensile strength ( MPa ) ( Soft ) |
55.00 |
| Yield strength ( MPa ) ( Hard ) |
84.5 |
| Yield strength ( MPa ) ( Soft ) |
14.0 |
| Physical Properties(物理性质) |
| Boiling point ( C ) |
1484 |
| Density ( g cm?? ) |
1.550 @20℃ |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10?? K?? ) |
22.000 @0-100℃ |
| Latent heat of evaporation ( J g?? ) |
3760 |
| Latent heat of fusion ( J g?? ) |
209.00 |
| Melting point ( C ) |
839.00 |
| Specific heat ( J K?? kg?? ) |
653.0 @25℃ |
| Thermal conductivity ( W m?? K?? ) |
125.00 @0-100℃ |
