Diameter[直径] | 5mm |
Grade[等级] | Graphite |
Length[长度] | 100 mm - 300 mm |
Particle Size[粒径] | Ultrafine 1-5 Microns |
Purity[纯度] | 99.997% |
Typical Analysis(典型分析) |
Al | 0.2 PPM |
B | 1 PPM |
Ca | 0.05 PPM |
Cu | 0.01 PPM |
Fe | 0.2 PPM |
Mg | 0.05 PPM |
Na | 0.02 PPM |
Si | 1 PPM |
Thermal Properties(热性能) |
Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 0.600 - 4.300 @0-100℃ |
Melting point ( C ) | 3650.00 |
Specific heat ( J K⁻¹ kg⁻¹ ) | 712.0 @25℃ |
Thermal conductivity ( W m⁻¹ K⁻¹ ) | 80.00 - 240.00 @0-100℃ |
Mechanical Properties(机械性能) |
Bulk modulus ( GPa ) ( Diamond ) | 542.0 |
Bulk modulus ( GPa ) ( Graphite ) | 33.0 |
Hardness - Mohs ( Diamond ) | 10.00 |
Hardness - Mohs ( Graphite ) | 0.50 - 1.00 |
Material condition | Diamond |
Material condition | Graphite |
Tensile modulus ( GPa ) ( Graphite ) | 4.80 |
Atomic Properties(原子属性) |
Atomic number | 6 |
Atomic weight ( amu ) | 12.01100 |
Crystal structure | Hexagonal/Diamond |
Electronic structure | He2s²2p² |
Ionisation potential ( No./eV ) | 6 / 490 |
Ionisation potential ( No./eV ) | 4 / 64.5 |
Ionisation potential ( No./eV ) | 1 / 11.26 |
Ionisation potential ( No./eV ) | 3 / 47.9 |
Ionisation potential ( No./eV ) | 2 / 24.38 |
Ionisation potential ( No./eV ) | 5 / 392 |
Natural isotope distribution ( Mass No./% ) | 12 / 98.89 |
Natural isotope distribution ( Mass No./% ) | 13 / 1.11 |
Photo-electric work function ( eV ) | 4.80 |
Thermal neutron absorption cross-section ( Barns ) | 0.0034 |
Valences shown | 2 , 3, 4 |
Physical Properties(物理性质) |
Boiling point ( C ) | 5000 |
Density ( g cm⁻³ ) | 2.250 @20℃ |
Electrical Properties(电气特性) |
Electrical resistivity ( μOhmcm ) | 1375@0℃ |
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.70 |