| Head Style[头型] | Hexagonal |
| Pitch[螺距] | 0.7 |
| Quantity[数量] | 10 Piece - 50 Piece |
| Size[尺寸] | M4 x 10mm |
| Standard[标准] | ISO 4017:2011 |
| 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℃ |
