| |
| Physical Properties | Metric | English | Comments |
|---|
Density  | 0.602 g/cc
@Temperature 1000 °C | 0.0217 lb/in³
@Temperature 1830 °F |
| | 0.653 g/cc
@Temperature 800 °C | 0.0236 lb/in³
@Temperature 1470 °F |
| | 0.702 g/cc
@Temperature 600 °C | 0.0254 lb/in³
@Temperature 1110 °F |
| | 0.751 g/cc
@Temperature 400 °C | 0.0271 lb/in³
@Temperature 752 °F |
| | 0.774 g/cc
@Temperature 300 °C | 0.0280 lb/in³
@Temperature 572 °F |
| | 0.797 g/cc
@Temperature 200 °C | 0.0288 lb/in³
@Temperature 392 °F |
| | 0.820 g/cc
@Temperature 100 °C | 0.0296 lb/in³
@Temperature 212 °F |
| | 0.855 g/cc
@Temperature 20.0 °C | 0.0309 lb/in³
@Temperature 68.0 °F |
| | 0.873 g/cc
@Temperature -73.0 °C | 0.0315 lb/in³
@Temperature -99.4 °F |
| | 0.894 g/cc
@Temperature -173 °C | 0.0323 lb/in³
@Temperature -279 °F |
| | 0.909 g/cc
@Temperature -270 °C | 0.0328 lb/in³
@Temperature -454 °F |
| Vapor Pressure | 0.150 bar
@Temperature 590 °C | 113 torr
@Temperature 1090 °F |
| | 0.500 bar
@Temperature 710 °C | 375 torr
@Temperature 1310 °F |
| | 1.00 bar
@Temperature 770 °C | 750 torr
@Temperature 1420 °F |
| | 2.00 bar
@Temperature 850 °C | 1500 torr
@Temperature 1560 °F |
| | 5.00 bar
@Temperature 950 °C | 3750 torr
@Temperature 1740 °F |
| | 10.0 bar
@Temperature 1110 °C | 7500 torr
@Temperature 2030 °F |
| | 20.0 bar
@Temperature 1240 °C | 15000 torr
@Temperature 2260 °F |
| | 40.0 bar
@Temperature 1420 °C | 30000 torr
@Temperature 2590 °F |
| |
| Chemical Properties | Metric | English | Comments |
|---|
| Atomic Mass | 39.0983 | 39.0983 |
| Atomic Number | 19 | 19 |
| Thermal Neutron Cross Section | 2.7 barns/atom | 2.7 barns/atom |
| X-ray Absorption Edge | 3.43645 Å | 3.43645 Å |
| | 36.352 Å | 36.352 Å |
| | 42.02 Å | 42.02 Å |
| | 42.452 Å | 42.452 Å |
| Critical Temperature | 1950 °C | 3540 °F |
| Electrode Potential | -2.92 V | -2.92 V |
| Electronegativity | 0.82 | 0.82 |
| Ionic Radius | 1.33 Å | 1.33 Å |
| Electrochemical Equivalent | 1.46 g/A/h | 1.46 g/A/h |
| |
| Electrical Properties | Metric | English | Comments |
|---|
| Electrical Resistivity | 0.00000649 ohm-cm
@Temperature 0.000 °C | 0.00000649 ohm-cm
@Temperature 32.0 °F |
| | 0.00000720 ohm-cm
@Temperature 20.0 °C | 0.00000720 ohm-cm
@Temperature 68.0 °F |
| | 0.00000922 ohm-cm
@Temperature 63.0 °C | 0.00000922 ohm-cm
@Temperature 145 °F |
| | 0.00001395 ohm-cm
@Temperature 63.0 °C | 0.00001395 ohm-cm
@Temperature 145 °F |
| | 0.00001464 ohm-cm
@Temperature 77.0 °C | 0.00001464 ohm-cm
@Temperature 171 °F |
| Magnetic Susceptibility | 5.2e-7 | 5.2e-7 |
| |
| Thermal Properties | Metric | English | Comments |
|---|
| Heat of Fusion | 61.55 J/g | 26.48 BTU/lb |
| Heat of Vaporization | 2077 J/g | 893.5 BTU/lb |
| CTE, linear | 83.0 µm/m-°C
@Temperature 20.0 - 100 °C | 46.1 µin/in-°F
@Temperature 68.0 - 212 °F |
| Specific Heat Capacity | 0.532 J/g-°C | 0.127 BTU/lb-°F |
| | 0.724 J/g-°C | 0.173 BTU/lb-°F |
| Thermal Conductivity | 99.2 W/m-K | 688 BTU-in/hr-ft²-°F |
| Melting Point | 63.25 °C | 145.9 °F |
| Boiling Point | 759 °C | 1400 °F |
| Heat of Formation | 0.000 kJ/mol | 0.000 kJ/mol |
| | 89.0 kJ/mol | 89.0 kJ/mol |
| |
| Component Elements Properties | Metric | English | Comments |
|---|
| Potassium, K | 100 % | 100 % |
| |
| Descriptive Properties |
|---|
| CAS Number | 7440-09-7 |
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