| Head Style[头型] | Hexagonal |
| Pitch[螺距] | 0.7 |
| Quantity[数量] | 10 Piece - 50 Piece |
| Size[尺寸] | M4 x 50mm |
| Standard[标准] | ISO 4017:2011 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) | 311.0 |
| Bulk modulus ( GPa ) ( Soft ) | 311.0 |
| Hardness - Vickers ( kgf mm⁻² ) ( Hard ) | 500 |
| Hardness - Vickers ( kgf mm⁻² ) ( Soft ) | 360 |
| Material condition | Soft |
| Material condition | Hard |
| Poisson's ratio ( Hard ) | 0.280 |
| Poisson's ratio ( Soft ) | 0.280 |
| Tensile modulus ( GPa ) ( Hard ) | 411.00 |
| Tensile modulus ( GPa ) ( Soft ) | 411.00 |
| Tensile strength ( MPa ) ( Hard ) | 1920.00 |
| Tensile strength ( MPa ) ( Soft ) | 550.00 - 620.00 |
| Yield strength ( MPa ) ( Soft ) | 550.0 |
| Atomic Properties(原子属性) |
| Atomic number | 74 |
| Atomic weight ( amu ) | 183.85000 |
| Crystal structure | Body Centred Cubic |
| Electronic structure | Xe4f¹⁴5d⁴6s² |
| Ionisation potential ( No./eV ) | 1 / 7.98 |
| Ionisation potential ( No./eV ) | 2 / 17.7 |
| Natural isotope distribution ( Mass No./% ) | 183 / 14.3 |
| Natural isotope distribution ( Mass No./% ) | 182 / 26.3 |
| Natural isotope distribution ( Mass No./% ) | 186 / 28.6 |
| Natural isotope distribution ( Mass No./% ) | 180 / 0.1 |
| Natural isotope distribution ( Mass No./% ) | 184 / 30.7 |
| Photo-electric work function ( eV ) | 4.55 |
| Thermal neutron absorption cross-section ( Barns ) | 18.5000 |
| Valences shown | 2 ,3,4,5,6 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 5.4@20℃ |
| Superconductivity critical temperature ( K ) | 0.0154 |
| Temperature coefficient ( K⁻¹ ) | 0.00480 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 1.12 |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 4.500 @0-100℃ |
| Latent heat of evaporation ( J g⁻¹ ) | 4009 |
| Latent heat of fusion ( J g⁻¹ ) | 192.00 |
| Melting point ( C ) | 3410.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 133.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 173.00 @0-100℃ |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 5660 |
| Density ( g cm⁻³ ) | 19.300 @20℃ |
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