| Rubidium, Rb | |
|---|---|
| Categories: | MetalNonferrous MetalPure Element |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
Density  | 1.45 g/cc @Temperature 220 °C | 0.0524 lb/in³ @Temperature 428 °F | |||
| 1.46 g/cc @Temperature 150 °C | 0.0527 lb/in³ @Temperature 302 °F | ||||
| 1.47 g/cc @Temperature 50.0 °C | 0.0531 lb/in³ @Temperature 122 °F | ||||
| 1.475 g/cc @Temperature 39.0 °C | 0.05329 lb/in³ @Temperature 102 °F | ||||
| 1.532 g/cc @Temperature 20.0 °C | 0.05535 lb/in³ @Temperature 68.0 °F | ||||
| Vapor Pressure | 0.001333 bar @Temperature 294 °C | 0.9998 torr @Temperature 561 °F | |||
| 0.01333 bar @Temperature 387 °C | 9.998 torr @Temperature 729 °F | ||||
| 0.1333 bar @Temperature 519 °C | 99.98 torr @Temperature 966 °F | ||||
| 0.2666 bar @Temperature 569 °C | 200.0 torr @Temperature 1060 °F | ||||
| 0.5333 bar @Temperature 628 °C | 400.0 torr @Temperature 1160 °F | ||||
| Surface Tension | 46.8 dynes/cm @Temperature 632 °C | 46.8 dynes/cm @Temperature 1170 °F | |||
| 51 dynes/cm @Temperature 550 °C | 51 dynes/cm @Temperature 1020 °F | ||||
| 80 dynes/cm @Temperature 100 °C | 80 dynes/cm @Temperature 212 °F | ||||
| 84.7 dynes/cm @Temperature 39.0 °C | 84.7 dynes/cm @Temperature 102 °F | ||||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 85.4678 | 85.4678 | 1995 | ||
| Atomic Number | 37 | 37 | |||
| Thermal Neutron Cross Section | 0.70 barns/atom | 0.70 barns/atom | |||
| X-ray Absorption Edge | 0.81549 Å | 0.81549 Å | K | ||
| 6.006 Å | 6.006 Å | LI | |||
| 6.6538 Å | 6.6538 Å | LII | |||
| 6.8752 Å | 6.8752 Å | LIII | |||
| Critical Temperature | 1820 °C | 3310 °F | |||
| Electrode Potential | -2.90 V | -2.90 V | |||
| Electronegativity | 0.82 | 0.82 | Pauling | ||
| Ionic Radius | 1.47 Å | 1.47 Å | Crystal Ionic Radius for Valence +1 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Modulus of Elasticity | 2.35 GPa | 341 ksi | |||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 0.0000125 ohm-cm | 0.0000125 ohm-cm | |||
| | 0.00001154 ohm-cm @Temperature 0.000 °C | 0.00001154 ohm-cm @Temperature 32.0 °F | |||
| 0.00001284 ohm-cm @Temperature 20.0 °C | 0.00001284 ohm-cm @Temperature 68.0 °F | ||||
| 0.0000137 ohm-cm @Temperature 39.9 °C | 0.0000137 ohm-cm @Temperature 104 °F | solid | |||
| 0.0000220 ohm-cm @Temperature 39.9 °C | 0.0000220 ohm-cm @Temperature 104 °F | liquid | |||
| 0.00002747 ohm-cm @Temperature 100 °C | 0.00002747 ohm-cm @Temperature 212 °F | liquid | |||
| Magnetic Susceptibility | 2.0e-7 | 2.0e-7 | cgs/g | ||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 25.5 J/g | 11.0 BTU/lb | |||
| Heat of Vaporization | 888 J/g | 382 BTU/lb | |||
| CTE, linear | 90.0 µm/m-°C @Temperature 20.0 °C | 50.0 µin/in-°F @Temperature 68.0 °F | |||
| Specific Heat Capacity | 0.336 J/g-°C | 0.0803 BTU/lb-°F | |||
| Thermal Conductivity | 33.3 W/m-K @Temperature 38.89 °C | 231 BTU-in/hr-ft²-°F @Temperature 102.0 °F | liquid | ||
| 58.1 W/m-K @Temperature 38.89 °C | 403 BTU-in/hr-ft²-°F @Temperature 102.0 °F | solid | |||
| 58.2 W/m-K @Temperature 25.0 °C | 404 BTU-in/hr-ft²-°F @Temperature 77.0 °F | solid | |||
| 58.3 W/m-K @Temperature 0.000 °C | 405 BTU-in/hr-ft²-°F @Temperature 32.0 °F | solid | |||
| Melting Point | 38.89 °C | 102.0 °F | |||
| Boiling Point | 688 °C | 1270 °F | |||
| Component Elements Properties | Metric | English | Comments | ||
| Rubidium, Rb | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7440-17-7 | ||||
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