| Manganese, Mn | |
|---|---|
| Categories: | MetalNonferrous MetalPure Element |
| Material Notes: | Hard Gray Metal. It is almost never used unalloyed, but it is a very important alloying component in a wide variety of steel and other alloys. |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 7.44 g/cc | 0.269 lb/in³ | |||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 54.93805 | 54.93805 | 54.938049 – 1995 | ||
| Atomic Number | 25 | 25 | |||
| Thermal Neutron Cross Section | 12.6 barns/atom | 12.6 barns/atom | |||
| X-ray Absorption Edge | 1.896 Å | 1.896 Å | K | ||
| 16.268 Å | 16.268 Å | LI | |||
| 18.896 Å | 18.896 Å | LII | |||
| 19.2484 Å | 19.2484 Å | LIII | |||
| Electrode Potential | -1.05 V | -1.05 V | |||
| Electronegativity | 1.55 | 1.55 | Pauling | ||
| Ionic Radius | 0.460 Å | 0.460 Å | Crystal Ionic Radius for Valence +7 | ||
| 0.600 Å | 0.600 Å | Crystal Ionic Radius for Valence +4 | |||
| 0.660 Å | 0.660 Å | Crystal Ionic Radius for Valence +3 | |||
| 0.800 Å | 0.800 Å | Crystal Ionic Radius for Valence +2 | |||
| Electrochemical Equivalent | 0.684 g/A/h | 0.684 g/A/h | trivalent | ||
| 1.025 g/A/h | 1.025 g/A/h | divalent | |||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Brinell | 460 | 460 | Converted from Vickers for 3000 kg load/10 mm ball Brinell test. | ||
| Hardness, Rockwell A | 75 | 75 | Converted from Vickers. | ||
| Hardness, Rockwell C | 48 | 48 | Converted from Vickers. | ||
| Hardness, Vickers | 500 | 500 | |||
| Tensile Strength, Ultimate | 496 MPa | 71900 psi | Gamma Phase | ||
| Tensile Strength, Yield | 241 MPa | 35000 psi | Gamma Phase | ||
| Modulus of Elasticity | 159 GPa | 23100 ksi | |||
| Bulk Modulus | 92.6 GPa | 13400 ksi | |||
| Poissons Ratio | 0.35 | 0.35 | |||
| Shear Modulus | 76.4 GPa | 11100 ksi | |||
| Electrical Properties | Metric | English | Comments | ||
Electrical Resistivity  | 0.00000688 ohm-cm @Temperature -273 °C | 0.00000688 ohm-cm @Temperature -459 °F | |||
| 0.00001884 ohm-cm @Temperature -263 °C | 0.00001884 ohm-cm @Temperature -441 °F | ||||
| 0.0000536 ohm-cm @Temperature -253 °C | 0.0000536 ohm-cm @Temperature -423 °F | ||||
| 0.0001261 ohm-cm @Temperature -223 °C | 0.0001261 ohm-cm @Temperature -369 °F | ||||
| 0.0001321 ohm-cm @Temperature -173 °C | 0.0001321 ohm-cm @Temperature -279 °F | ||||
| 0.0001359 ohm-cm @Temperature -123 °C | 0.0001359 ohm-cm @Temperature -189 °F | ||||
| 0.0001391 ohm-cm @Temperature -73.0 °C | 0.0001391 ohm-cm @Temperature -99.4 °F | ||||
| 0.0001419 ohm-cm @Temperature -23.0 °C | 0.0001419 ohm-cm @Temperature -9.40 °F | ||||
| 0.000143 ohm-cm @Temperature 0.000 °C | 0.000143 ohm-cm @Temperature 32.0 °F | ||||
| 0.000144 ohm-cm @Temperature 20.0 °C | 0.000144 ohm-cm @Temperature 68.0 °F | ||||
| 0.0001442 ohm-cm @Temperature 27.0 °C | 0.0001442 ohm-cm @Temperature 80.6 °F | ||||
| 0.0001461 ohm-cm @Temperature 77.0 °C | 0.0001461 ohm-cm @Temperature 171 °F | ||||
| 0.0001477 ohm-cm @Temperature 127 °C | 0.0001477 ohm-cm @Temperature 261 °F | ||||
| 0.0001501 ohm-cm @Temperature 227 °C | 0.0001501 ohm-cm @Temperature 441 °F | ||||
| 0.0001521 ohm-cm @Temperature 327 °C | 0.0001521 ohm-cm @Temperature 621 °F | ||||
| 0.0001536 ohm-cm @Temperature 427 °C | 0.0001536 ohm-cm @Temperature 801 °F | ||||
| Magnetic Susceptibility | 0.0000115 | 0.0000115 | cgs/g | ||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 271 J/g | 117 BTU/lb | |||
| Heat of Vaporization | 4091 J/g | 1760 BTU/lb | |||
| CTE, linear | 22.8 µm/m-°C @Temperature 20.0 – 100 °C | 12.7 µin/in-°F @Temperature 68.0 – 212 °F | |||
| 26.9 µm/m-°C @Temperature 227 °C | 14.9 µin/in-°F @Temperature 441 °F | ||||
| 45.7 µm/m-°C @Temperature 1087 °C | 25.4 µin/in-°F @Temperature 1989 °F | Beta Phase | |||
| Specific Heat Capacity | 0.379 J/g-°C | 0.0906 BTU/lb-°F | Gas | ||
| 0.448 J/g-°C | 0.107 BTU/lb-°F | ||||
| Thermal Conductivity | 1.64 W/m-K @Temperature -263 °C | 11.4 BTU-in/hr-ft²-°F @Temperature -441 °F | |||
| 2.42 W/m-K @Temperature -253 °C | 16.8 BTU-in/hr-ft²-°F @Temperature -423 °F | ||||
| 4.07 W/m-K @Temperature -223 °C | 28.2 BTU-in/hr-ft²-°F @Temperature -369 °F | ||||
| 5.81 W/m-K @Temperature -173 °C | 40.3 BTU-in/hr-ft²-°F @Temperature -279 °F | ||||
| 6.65 W/m-K @Temperature -123 °C | 46.2 BTU-in/hr-ft²-°F @Temperature -189 °F | ||||
| 7.18 W/m-K @Temperature -73.0 °C | 49.8 BTU-in/hr-ft²-°F @Temperature -99.4 °F | ||||
| 7.54 W/m-K @Temperature -23.0 °C | 52.3 BTU-in/hr-ft²-°F @Temperature -9.40 °F | ||||
| 7.68 W/m-K @Temperature 0.000 °C | 53.3 BTU-in/hr-ft²-°F @Temperature 32.0 °F | ||||
| 7.79 W/m-K @Temperature 20.0 °C | 54.1 BTU-in/hr-ft²-°F @Temperature 68.0 °F | ||||
| 7.82 W/m-K @Temperature 27.0 °C | 54.3 BTU-in/hr-ft²-°F @Temperature 80.6 °F | ||||
| Melting Point | 1244 °C | 2271 °F | |||
| Boiling Point | 2061 °C | 3742 °F | |||
| Heat of Formation | 0.000 kJ/mol | 0.000 kJ/mol | Crystal | ||
| 280.7 kJ/mol | 280.7 kJ/mol | Gas | |||
| Optical Properties | Metric | English | Comments | ||
| Emissivity (0-1) | 0.57 | 0.57 | unoxidized, 650 nm, total spectrum | ||
| Reflection Coefficient, Visible (0-1) | 0.45 | 0.45 | 400 nm air-exposed | ||
| 0.55 | 0.55 | 400 nm polished | |||
| Component Elements Properties | Metric | English | Comments | ||
| Manganese, Mn | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7439-96-5 | ||||
| Solubility | Soluble in diluted Acids | ||||
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