| Lanthanum, La | |
|---|---|
| Categories: | MetalNonferrous MetalPure Element |
| Material Notes: | |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 6.166 g/cc | 0.2228 lb/in³ | |||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 138.9055 | 138.9055 | 1995 | ||
| Atomic Number | 57 | 57 | |||
| X-ray Absorption Edge | 0.31842 Å | 0.31842 Å | K | ||
| 1.97892 Å | 1.97892 Å | LI | |||
| 2.1003 Å | 2.1003 Å | LII | |||
| 2.25792 Å | 2.25792 Å | LIII | |||
| Electronegativity | 1.1 | 1.1 | Pauling | ||
| Ionic Radius | 1.016 Å | 1.016 Å | Crystal Ionic Radius for Valence +3 | ||
| 1.39 Å | 1.39 Å | Crystal Ionic Radius for Valence +1 | |||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Vickers | 28 | 28 | |||
| Tensile Strength, Ultimate | 130 MPa | 18900 psi | |||
| Tensile Strength, Yield | 125 MPa | 18100 psi | |||
| Elongation at Break | 7.9 % | 7.9 % | |||
| Tensile Modulus | 36.6 GPa | 5310 ksi | |||
| Bulk Modulus | 27.9 GPa | 4050 ksi | |||
| Poissons Ratio | 0.28 | 0.28 | |||
| Shear Modulus | 14.3 GPa | 2070 ksi | |||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 0.0000798 ohm-cm | 0.0000798 ohm-cm | |||
| Magnetic Susceptibility | 7.27e-7 | 7.27e-7 | cgs/g | ||
| Critical Magnetic Field Strength, Oersted | 800 | 800 | or alpha phase | ||
| 1096 | 1096 | beta phase | |||
| Critical Superconducting Temperature | 9.20 K | 9.20 K | ~5.5-12.9 K from 0-21.0 GPa pressure; 4.88 for alpha phase. Value for ßLa is 6.00 K. | ||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 44.6 J/g | 19.2 BTU/lb | |||
| CTE, linear | 12.1 µm/m-°C @Temperature 20.0 °C | 6.72 µin/in-°F @Temperature 68.0 °F | |||
| Specific Heat Capacity | 0.1641 J/g-°C | 0.03923 BTU/lb-°F | Gas | ||
| 0.1951 J/g-°C | 0.04663 BTU/lb-°F | Crystal | |||
| Thermal Conductivity | 14.0 W/m-K | 97.2 BTU-in/hr-ft²-°F | |||
| Melting Point | 915 – 925 °C | 1680 – 1700 °F | |||
| Boiling Point | 3464 °C | 6267 °F | |||
| Heat of Formation | 0.000 kJ/mol | 0.000 kJ/mol | Crystal | ||
| 431 kJ/mol | 431 kJ/mol | Gas | |||
| Optical Properties | Metric | English | Comments | ||
| Emissivity (0-1) | 0.409 @Wavelength >=645 nm, Temperature 867 – 918 °C | 0.409 @Wavelength >=645 nm, Temperature 1590 – 1680 °F | |||
| Component Elements Properties | Metric | English | Comments | ||
| Lanthanum, La | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7439-91-0 | ||||
| Solubility | Soluble in diluted Acid | ||||
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