| All data is for information only------(<---links) | |
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| PRODUCT DATA of Erbium |
| Material | Erbium |
| Chemical Composition | 100Er |
| CAS Registry ID | 7440-52-0 |
| EXPERIENCE IN PRACTICE |
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| Development Status | Special Commercial Product |
| Cost Range | High |
| Equivalent Designations | Er |
| Space Experience | Limited |
| PHYSICAL PROPERTIES |
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| Atomic Number | 68 |
| Atomic Weight | 167 amu |
| Specific Gravity | 9.07 |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 70 GPa |
| Shear Modulus | 28 GPa |
| Bulk Modulus | 44 GPa |
| Poisson Ratio | 0.24 |
| Speed of Sound (longitudinal) | 2830 m/s |
| ELECTRICAL PROPERTIES |
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| Electrical Volume Resistivity | 8.6e-7 ohm.m |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 15 W/m.K |
| Thermal Expansion Coefficient | 12.2 μstrain/°C |
| Melting Range | 1800 °C |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| EMF vs SCE | -1.34 V Remark: Measured in 3.5% NaCl solution Data Quality: Design Data |
| SPECIAL RECOMMENDATIONS |
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| Lessons Learned | During plasma welding high intensities of UV are emitted that can cause sun burns very quickly. |