These targets are normally available for immediate shipment from stock. Other sizes are available to special order.
| 订货号 | 包装规格 |
| Disc |
| 857-874-87 | 50mm |
产品参数
| Diameter[直径] | 50mm |
| Purity[纯度] | 99.9% |
| Thickness[厚度] | 2mm |
| Typical Analysis(典型分析) |
| Al | 5 PPM |
| Ca | 2 PPM |
| Co | 1 PPM |
| Cr | 5 PPM |
| Cu | 2 PPM |
| Fe | 30 PPM |
| Mg | 5 PPM |
| Mn | 2 PPM |
| Mo | 100 PPM |
| Na | 10 PPM |
| Nb | <500 PPM |
| Ni | 3 PPM |
| Si | 10 PPM |
| Sn | 2 PPM |
| Ti | 20 PPM |
| V | 5 PPM |
| W | 100 PPM |
| Zr | 10 PPM |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) | 196.3 |
| Bulk modulus ( GPa ) ( Soft ) | 196.3 |
| Hardness - Vickers ( kgf mm⁻² ) ( Hard ) | 200 |
| Hardness - Vickers ( kgf mm⁻² ) ( Soft ) | 90 |
| Material condition | Hard |
| Material condition | Soft |
| Poisson's ratio ( Hard ) | 0.342 |
| Poisson's ratio ( Soft ) | 0.342 |
| Tensile modulus ( GPa ) ( Hard ) | 185.70 |
| Tensile modulus ( GPa ) ( Soft ) | 185.70 |
| Tensile strength ( MPa ) ( Hard ) | 760.00 |
| Tensile strength ( MPa ) ( Soft ) | 172.00 - 207.00 |
| Yield strength ( MPa ) ( Hard ) | 705.0 |
| Yield strength ( MPa ) ( Soft ) | 310.0 - 380.0 |
| Atomic Properties(原子属性) |
| Atomic number | 73 |
| Atomic weight ( amu ) | 180.94790 |
| Crystal structure | Body Centred Cubic |
| Electronic structure | Xe4f¹⁴5d³6s² |
| Ionisation potential ( No./eV ) | 1 / 7.88 |
| Ionisation potential ( No./eV ) | 2 / 16.2 |
| Natural isotope distribution ( Mass No./% ) | 180 / 0.012 |
| Natural isotope distribution ( Mass No./% ) | 181 / 99.988 |
| Photo-electric work function ( eV ) | 4.10 |
| Thermal neutron absorption cross-section ( Barns ) | 22.0000 |
| Valences shown | 2 ,3,4,5 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 13.5@20℃ |
| Superconductivity critical temperature ( K ) | 4.4700 |
| Temperature coefficient ( K⁻¹ ) | 0.00350 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.33 |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 6.500 @0-100℃ |
| Latent heat of evaporation ( J g⁻¹ ) | 4165 |
| Latent heat of fusion ( J g⁻¹ ) | 174.00 |
| Melting point ( C ) | 2996.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 140.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 57.50 @0-100 |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 5425 |
| Density ( g cm⁻³ ) | 16.600 @20℃ |
其他参数
公差
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