铅,块, Pb, 4mm Max. Lump Size, Shot
| 品牌: | Goodfellow | | 纯度含量: | 99.5% | | 产地: | 英国 |
产品介绍
| 订货号 | 包装规格 | | Weight | | 570-780-85 | 50 g | | 649-966-11 | 100 g | | 816-470-40 | 200 g | | 331-079-92 | 500 g | | 212-576-03 | 1000 g |
产品参数 | Maximum Lump Size[] | 4mm | | Product Shape[形状] | Shot | | Purity[纯度] | 99.5% | | Weight[重量] | 50 g - 1000 g | | Typical Analysis(典型分析) | | Ag | 20 PPM | | Bi | 80 PPM | | Cu | 50 PPM | | Thermal Properties(热性能) | | Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 29.000 @0-100℃ | | Latent heat of evaporation ( J g⁻¹ ) | 862 | | Latent heat of fusion ( J g⁻¹ ) | 23.20 | | Melting point ( C ) | 327.50 | | Specific heat ( J K⁻¹ kg⁻¹ ) | 159.0 @25℃ | | Thermal conductivity ( W m⁻¹ K⁻¹ ) | 35.30 @0-100℃ | | Atomic Properties(原子属性) | | Atomic number | 82 | | Atomic weight ( amu ) | 207.20000 | | Crystal structure | Face Centred Cubic | | Electronic structure | Xe4f¹⁴5d¹⁰6s²6p² | | Ionisation potential ( No./eV ) | 5 / 68.8 | | Ionisation potential ( No./eV ) | 3 / 31.9 | | Ionisation potential ( No./eV ) | 4 / 42.3 | | Ionisation potential ( No./eV ) | 2 / 15.03 | | Ionisation potential ( No./eV ) | 1 / 7.42 | | Natural isotope distribution ( Mass No./% ) | 207 / 22.1 | | Natural isotope distribution ( Mass No./% ) | 208 / 52.4 | | Natural isotope distribution ( Mass No./% ) | 206 / 24.1 | | Natural isotope distribution ( Mass No./% ) | 204 / 1.4 | | Photo-electric work function ( eV ) | 4.00 | | Thermal neutron absorption cross-section ( Barns ) | 0.1800 | | Valences shown | 2 , 4 | | Electrical Properties(电气特性) | | Electrical resistivity ( μOhmcm ) | 20.6@20℃ | | Superconductivity critical temperature ( K ) | 7.1960 | | Temperature coefficient ( K⁻¹ ) | 0.00420 @0-100℃ | | Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.44 | | Mechanical Properties(机械性能) | | Bulk modulus ( GPa ) ( Polycrystalline ) | 45.8 | | Bulk modulus ( GPa ) ( Sand cast ) | 45.8 | | Hardness - Mohs ( Sand cast ) | 1.50 | | Material condition | Polycrystalline | | Material condition | Sand Cast | | Poisson's ratio ( Polycrystalline ) | 0.440 | | Poisson's ratio ( Sand cast ) | 0.440 | | Tensile modulus ( GPa ) ( Polycrystalline ) | 16.10 | | Tensile modulus ( GPa ) ( Sand cast ) | 16.10 | | Tensile strength ( MPa ) ( Sand cast ) | 12.00 | | Yield strength ( MPa ) ( Sand cast ) | 5.5 | | Physical Properties(物理性质) | | Boiling point ( C ) | 1740 | | Density ( g cm⁻³ ) | 11.350 @20 |
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