| Cobalt, Co | |
|---|---|
| Categories: | MetalNonferrous MetalCobalt AlloyPure Element |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 8.80 g/cc | 0.318 lb/in³ | |||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 58.933201 | 58.933201 | 1995 | ||
| Atomic Number | 27 | 27 | |||
| Thermal Neutron Cross Section | 34.8 barns/atom | 34.8 barns/atom | |||
| X-ray Absorption Edge | 1.608 Å | 1.608 Å | K | ||
| 13.343 Å | 13.343 Å | LI | |||
| 15.534 Å | 15.534 Å | LII | |||
| 15.8314 Å | 15.8314 Å | LIII | |||
| Electrode Potential | -0.280 V | -0.280 V | |||
| Electronegativity | 1.88 | 1.88 | Pauling | ||
| Ionic Radius | 0.630 Å | 0.630 Å | Crystal Ionic Radius for Valence +3 | ||
| 0.720 Å | 0.720 Å | Crystal Ionic Radius for Valence +2 | |||
| Electrochemical Equivalent | 1.1 g/A/h | 1.1 g/A/h | |||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Brinell | 125 | 125 | |||
| Hardness, Vickers | 253 | 253 | |||
| Tensile Strength, Yield | 225 MPa | 32600 psi | |||
| Modulus of Elasticity | 211 GPa | 30600 ksi | |||
| Poissons Ratio | 0.32 | 0.32 | |||
| Shear Modulus | 82.6 GPa | 12000 ksi | |||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 0.00000624 ohm-cm | 0.00000624 ohm-cm | |||
| Magnetic Permeability | 68 | 68 | Initial | ||
| <= 245 | <= 245 | ||||
| Curie Temperature | 1121 °C | 2050 °F | |||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 259.6 J/g | 111.7 BTU/lb | |||
| Heat of Vaporization | 3280 J/g | 1410 BTU/lb | |||
CTE, linear  | 12.5 µm/m-°C @Temperature 20.0 – 100 °C | 6.94 µin/in-°F @Temperature 68.0 – 212 °F | |||
| 14.2 µm/m-°C @Temperature 200 °C | 7.89 µin/in-°F @Temperature 392 °F | ||||
| Specific Heat Capacity | 0.440 J/g-°C | 0.105 BTU/lb-°F | |||
| Thermal Conductivity | 69.21 W/m-K | 480.3 BTU-in/hr-ft²-°F | |||
| Melting Point | 1493 °C | 2719 °F | |||
| Boiling Point | 2927 °C | 5301 °F | |||
| Optical Properties | Metric | English | Comments | ||
| Emissivity (0-1) | 0.13 @Temperature 500 °C | 0.13 @Temperature 932 °F | unoxidized, total spectrum | ||
| Reflection Coefficient, Visible (0-1) | 0.37 | 0.37 | 200 nm | ||
| 0.675 | 0.675 | 1060 nm | |||
| Component Elements Properties | Metric | English | Comments | ||
| Cobalt, Co | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7440-48-4 | ||||
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