All foils are mounted on a permanent support which cannot be removed without damaging the foil.
| 订货号 | 包装规格 |
| Sizes |
| 244-303-95 | 25 mm x 25 mm |
| 946-452-33 | 50 mm x 50 mm |
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参数
| Purity[纯度] | 98.7% |
| Thickness[厚度] | 0.025mm |
| Typical Analysis(典型分析) |
| Al | 40 PPM |
| Ca | 100 PPM |
| Cr | 4 PPM |
| Cu | 8 PPM |
| Fe | 40 PPM |
| Mg | 100 PPM |
| Pb | 1.25 Percent |
| Si | 50 PPM |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Polycrystalline ) | 118.0 |
| Hardness - Mohs ( Polycrystalline ) | 5.00 |
| Material condition | Polycrystalline |
| Poisson's ratio ( Polycrystalline ) | 0.240 |
| Tensile modulus ( GPa ) ( Polycrystalline ) | 191.00 |
| Atomic Properties(原子属性) |
| Atomic number | 25 |
| Atomic weight ( amu ) | 54.93800 |
| Crystal structure | Body Centred Cubic |
| Electronic structure | Ar3d⁵4s² |
| Ionisation potential ( No./eV ) | 2 / 15.64 |
| Ionisation potential ( No./eV ) | 3 / 33.67 |
| Ionisation potential ( No./eV ) | 4 / 51.2 |
| Ionisation potential ( No./eV ) | 6 / 95 |
| Ionisation potential ( No./eV ) | 5 / 72.4 |
| Ionisation potential ( No./eV ) | 1 / 7.43 |
| Photo-electric work function ( eV ) | 3.80 |
| Thermal neutron absorption cross-section ( Barns ) | 13.3000 |
| Valences shown | 1 , 2, 3, 4, 6, 7 |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 1962 |
| Density ( g cm⁻³ ) | 7.400 @20℃ |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 23.000 @0-100℃ |
| Latent heat of evaporation ( J g⁻¹ ) | 4207 |
| Latent heat of fusion ( J g⁻¹ ) | 267.00 |
| Melting point ( C ) | 1244.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 477.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 7.81 @0-100℃ |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 160@20℃ |
其他参数
公差
| 长度 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
| 直径 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
| 厚度 | <0.01mm | ±25% |
|---|
| ≤0.05mm | ±15% |
| >0.05mm | ±10% |
| 长度 1 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
| 长度 2 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
