| Diameter[直径] |
2.5mm |
| Grade[等级] |
Aluminium Alloy 2017 |
| Purity[纯度] |
95.2% |
| Quantity[数量] |
50 Piece - 200 Piece |
| Sphericity[球面] |
5.08μm |
| Type[类型] |
Precision Sphere |
| Typical Analysis(典型分析) |
| Cr |
0.05 Percent |
| Cu |
4 Percent |
| Fe |
0.4 Percent |
| Mg |
0.5 Percent |
| Mn |
0.5 Percent |
| Si |
0.4 Percent |
| Zn |
0.2 Percent |
| Atomic Properties(原子属性) |
| Atomic number |
13 |
| Atomic weight ( amu ) |
26.98154 |
| Crystal structure |
Face Centred Cubic |
| Electronic structure |
Ne3s?3p? |
| Ionisation potential ( No./eV ) |
4 / 120 |
| Ionisation potential ( No./eV ) |
5 / 154 |
| Ionisation potential ( No./eV ) |
6 / 190 |
| Ionisation potential ( No./eV ) |
1 / 5.99 |
| Ionisation potential ( No./eV ) |
3 / 28.4 |
| Ionisation potential ( No./eV ) |
2 / 18.8 |
| Photo-electric work function ( eV ) |
4.20 |
| Thermal neutron absorption cross-section ( Barns ) |
0.2320 |
| Valences shown |
3 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) |
2.67@20℃ |
| Superconductivity critical temperature ( K ) |
1.1750 |
| Temperature coefficient ( K?? ) |
0.00450 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) |
0.42 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Hard ) |
75.2 |
| Bulk modulus ( GPa ) ( Soft ) |
75.2 |
| Hardness - Vickers ( kgf mm?? ) ( Hard ) |
35 - 48 |
| Hardness - Vickers ( kgf mm?? ) ( Soft ) |
21 |
| Material condition |
Soft |
| Material condition |
Hard |
| Poisson's ratio ( Hard ) |
0.345 |
| Poisson's ratio ( Soft ) |
0.345 |
| Tensile modulus ( GPa ) ( Hard ) |
70.60 |
| Tensile modulus ( GPa ) ( Soft ) |
70.60 |
| Tensile strength ( MPa ) ( Hard ) |
130.00 - 195.00 |
| Tensile strength ( MPa ) ( Soft ) |
50.00 - 90.00 |
| Yield strength ( MPa ) ( Hard ) |
110.0 - 170.0 |
| Yield strength ( MPa ) ( Soft ) |
10.0 - 35.0 |
| Physical Properties(物理性质) |
| Boiling point ( C ) |
2467 |
| Density ( g cm?? ) |
2.700 @20℃ |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10?? K?? ) |
23.500 @0-100℃ |
| Latent heat of evaporation ( J g?? ) |
10800 |
| Latent heat of fusion ( J g?? ) |
388.00 |
| Melting point ( C ) |
660.40 |
| Specific heat ( J K?? kg?? ) |
900.0 @25℃ |
| Thermal conductivity ( W m?? K?? ) |
237.00 @0-100℃ |
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