| Diameter[直径] |
2mm |
| Grade[等级] |
Grade 200 |
| Quantity[数量] |
100 Piece - 1000 Piece |
| Sphericity[球面] |
5.08μm |
| Type[类型] |
Precision Sphere |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) |
137.8 |
| Bulk modulus ( GPa ) ( Soft ) |
137.8 |
| Hardness - Vickers ( kgf mm?? ) ( Hard ) |
87 |
| Hardness - Vickers ( kgf mm?? ) ( Soft ) |
49 |
| Izod toughness ( J m?? ) ( Hard ) |
68 |
| Izod toughness ( J m?? ) ( Soft ) |
58 |
| Material condition |
Soft |
| Material condition |
Hard |
| Poisson's ratio ( Hard ) |
0.343 |
| Poisson's ratio ( Soft ) |
0.343 |
| Tensile modulus ( GPa ) ( Hard ) |
129.80 |
| Tensile modulus ( GPa ) ( Soft ) |
129.80 |
| Tensile strength ( MPa ) ( Hard ) |
314.00 |
| Tensile strength ( MPa ) ( Soft ) |
224.00 |
| Yield strength ( MPa ) ( Hard ) |
270.0 |
| Yield strength ( MPa ) ( Soft ) |
54.0 |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10?? K?? ) |
17.000 @0-100℃ |
| Latent heat of evaporation ( J g?? ) |
4796 |
| Latent heat of fusion ( J g?? ) |
205.00 |
| Melting point ( C ) |
1083.00 |
| Specific heat ( J K?? kg?? ) |
385.0 @25℃ |
| Thermal conductivity ( W m?? K?? ) |
401.00 @0-100℃ |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) |
1.69@20℃ |
| Temperature coefficient ( K?? ) |
0.00430 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) |
0.76 |
| Atomic Properties(原子属性) |
| Atomic number |
29 |
| Atomic weight ( amu ) |
63.54600 |
| Crystal structure |
Face Centred Cubic |
| Electronic structure |
Ar3d??4s? |
| Ionisation potential ( No./eV ) |
4 / 55.2 |
| Ionisation potential ( No./eV ) |
6 / 103 |
| Ionisation potential ( No./eV ) |
1 / 7.73 |
| Ionisation potential ( No./eV ) |
5 / 79.9 |
| Ionisation potential ( No./eV ) |
3 / 36.8 |
| Ionisation potential ( No./eV ) |
2 / 20.29 |
| Natural isotope distribution ( Mass No./% ) |
65 / 30.8 |
| Natural isotope distribution ( Mass No./% ) |
63 / 69.2 |
| Photo-electric work function ( eV ) |
4.50 |
| Thermal neutron absorption cross-section ( Barns ) |
3.8000 |
| Valences shown |
1 , 2 |
| Physical Properties(物理性质) |
| Boiling point ( C ) |
2567 |
| Density ( g cm?? ) |
8.960 @20℃ |
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