| Promethium, Pm | |
|---|---|
| Categories: | MetalNonferrous MetalPure Element |
| Material Notes: | Most Property Data Below Is Estimated. Physical Form: Silver-Metal; Hexagonal |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 7.264 g/cc | 0.2624 lb/in³ | Alpha-Phase | ||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 145 | 145 | Longest-Lived Isotope (1995) | ||
| Atomic Number | 61 | 61 | |||
| X-ray Absorption Edge | 0.27425 Å | 0.27425 Å | K | ||
| 1.66837 Å | 1.66837 Å | LI | |||
| 1.76581 Å | 1.76581 Å | LII | |||
| 1.91888 Å | 1.91888 Å | LIII | |||
| Ionic Radius | 0.979 Å | 0.979 Å | Crystal Ionic Radius for Valence +3 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Knoop | 63 | 63 | |||
| Tensile Strength, Ultimate | 160 MPa | 23200 psi | |||
| Tensile Strength, Yield | 70.0 MPa | 10200 psi | |||
| Elongation at Break | 25 % | 25 % | |||
| Tensile Modulus | 50.0 GPa | 7250 ksi | |||
| Bulk Modulus | 33.0 GPa | 4790 ksi | |||
| Poissons Ratio | 0.28 | 0.28 | |||
| Shear Modulus | 18.0 GPa | 2610 ksi | |||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 53.0 J/g | 22.8 BTU/lb | |||
| CTE, linear | 9.00 µm/m-°C | 5.00 µin/in-°F | along a-axis | ||
| 16.0 µm/m-°C | 8.89 µin/in-°F | along c-axis | |||
 | 11.0 µm/m-°C @Temperature 20.0 °C | 6.11 µin/in-°F @Temperature 68.0 °F | Bulk | ||
| Specific Heat Capacity | 0.188 J/g-°C | 0.0449 BTU/lb-°F | |||
| Thermal Conductivity | 17.9 W/m-K | 124 BTU-in/hr-ft²-°F | |||
| Melting Point | 1042 °C | 1908 °F | |||
| Boiling Point | 3000 °C | 5430 °F | |||
| Heat of Formation | 0.000 kJ/mol | 0.000 kJ/mol | Crystal | ||
| Component Elements Properties | Metric | English | Comments | ||
| Promethium, Pm | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7440-12-2 | ||||
References for this datasheet.
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error. We also ask that you refer to MatWeb’s terms of use regarding this information.
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