May contain hydrogen and/or the metal hydride.
| 订货号 | 包装规格 |
| Weight |
| 139-059-29 | 1g |
| 382-411-09 | 2g |
半岛bd体育手机客户端
参数
| Maximum Particle Size[最大粒度] | 250μm |
| Purity[纯度] | 99.9% |
| Weight[重量] | 1g - 2g |
| Typical Analysis(典型分析) |
| Al | 20 PPM |
| Ca | 100 PPM |
| Cr | 5 PPM |
| Cu | 2 PPM |
| Fe | 10 PPM |
| Mg | 1 PPM |
| Mn | <1 PPM |
| Ni | 50 PPM |
| Si | 2 PPM |
| Yb | 5 PPM |
| Atomic Properties(原子属性) |
| Atomic number | 21 |
| Atomic weight ( amu ) | 44.95590 |
| Crystal structure | Hexagonal Close Packed |
| Electronic structure | Ar3d¹4s² |
| Ionisation potential ( No./eV ) | 3 / 24.8 |
| Ionisation potential ( No./eV ) | 5 / 91.7 |
| Ionisation potential ( No./eV ) | 4 / 73.5 |
| Ionisation potential ( No./eV ) | 6 / 111 |
| Ionisation potential ( No./eV ) | 1 / 6.54 |
| Ionisation potential ( No./eV ) | 2 / 12.8 |
| Photo-electric work function ( eV ) | 3.50 |
| Thermal neutron absorption cross-section ( Barns ) | 25.0000 |
| Valences shown | 3 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) | 44.2 |
| Bulk modulus ( GPa ) ( Soft ) | 44.2 |
| Hardness - Brinell ( Hard ) | 136 |
| Hardness - Brinell ( Soft ) | 78 |
| Material condition | Soft |
| Material condition | Hard |
| Poisson's ratio ( Hard ) | 0.270 |
| Poisson's ratio ( Soft ) | 0.270 |
| Tensile modulus ( GPa ) ( Hard ) | 79.30 |
| Tensile modulus ( GPa ) ( Soft ) | 79.30 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 66@20℃ |
| Temperature coefficient ( K⁻¹ ) | 0.00282 @0-100℃ |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 2831 |
| Density ( g cm⁻³ ) | 2.990 @20℃ |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 12.000 @0-100℃ |
| Latent heat of evaporation ( J g⁻¹ ) | 7293 |
| Latent heat of fusion ( J g⁻¹ ) | 357.00 |
| Melting point ( C ) | 1541.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 557.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 15.80 @0-100℃ |
易燃
与火焰接触后点燃的化学品，或与水接触后逸出高度易燃气体的化学品。
