铬,粉末, Cr, 38μm 最大粒度, 2N
| 品牌: | Goodfellow | | 纯度含量: | 99.0% | | 产地: | 英国 |
产品介绍
| 订货号 | 包装规格 | | Weight | | 248-375-09 | 50 g | | 881-124-59 | 100 g | | 140-563-87 | 200 g | | 570-478-67 | 500 g | | 309-826-20 | 1000 g |
产品参数 | Maximum Particle Size[最大粒度] | 38μm | | Purity[纯度] | 99.0% | | Weight[重量] | 50 g - 1000 g | | Typical Analysis(典型分析) | | Al | <2000 PPM | | C | <200 PPM | | Fe | <6000 PPM | | S | <200 PPM | | Si | <1000 PPM | | Atomic Properties(原子属性) | | Atomic number | 24 | | Atomic weight ( amu ) | 51.99600 | | Crystal structure | Body Centred Cubic | | Electronic structure | Ar3d⁵4s¹ | | Ionisation potential ( No./eV ) | 4 / 49.1 | | Ionisation potential ( No./eV ) | 3 / 31.0 | | Ionisation potential ( No./eV ) | 1 / 6.77 | | Ionisation potential ( No./eV ) | 6 / 90.6 | | Ionisation potential ( No./eV ) | 2 / 16.5 | | Ionisation potential ( No./eV ) | 5 / 69.3 | | Natural isotope distribution ( Mass No./% ) | 50 / 4.35 | | Natural isotope distribution ( Mass No./% ) | 52 / 83.79 | | Natural isotope distribution ( Mass No./% ) | 54 / 2.36 | | Natural isotope distribution ( Mass No./% ) | 53 / 9.5 | | Photo-electric work function ( eV ) | 4.40 | | Thermal neutron absorption cross-section ( Barns ) | 3.1000 | | Valences shown | 2 , 3, 6 | | Mechanical Properties(机械性能) | | Bulk modulus ( GPa ) ( Hard ) | 160.2 | | Bulk modulus ( GPa ) ( Soft ) | 160.2 | | Hardness - Vickers ( kgf mm⁻² ) ( Hard ) | 220 | | Hardness - Vickers ( kgf mm⁻² ) ( Soft ) | 130 | | Material condition | Hard | | Material condition | Soft | | Poisson's ratio ( Hard ) | 0.210 | | Poisson's ratio ( Soft ) | 0.210 | | Tensile modulus ( GPa ) ( Hard ) | 279.00 | | Tensile modulus ( GPa ) ( Soft ) | 279.00 | | Tensile strength ( MPa ) ( Hard ) | 689.00 | | Tensile strength ( MPa ) ( Soft ) | 103.00 | | Electrical Properties(电气特性) | | Electrical resistivity ( μOhmcm ) | 13.2@20℃ | | Temperature coefficient ( K⁻¹ ) | 0.00214 @0-100℃ | | Thermal Properties(热性能) | | Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 6.500 @0-100℃ | | Latent heat of evaporation ( J g⁻¹ ) | 6580 | | Latent heat of fusion ( J g⁻¹ ) | 260.00 | | Melting point ( C ) | 1857.00 | | Specific heat ( J K⁻¹ kg⁻¹ ) | 518.0 @25℃ | | Thermal conductivity ( W m⁻¹ K⁻¹ ) | 94.00 @0-100℃ | | Physical Properties(物理性质) | | Boiling point ( C ) | 2672 | | Density ( g cm⁻³ ) | 7.100 @20℃ |
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