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The thermal expansion coefficient of beryllium is similar to that of stainless steel and Ni-Co alloy, and the thermal diffusivity is also good. The thermal conductivity of beryllium at room temperature is 0.15kW/ (m.K). At room temperature, the specific heat is 1.8828 J/gK, and beryllium absorbs more heat than other metals, and this property remains to the point of melting.
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Beryllium has the largest heat capacity in all metals. The phase transition takes place at 1254 DEG C, which is the structure of beta -Be. Beryllium has a dense arrangement of six sides.
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The melting point is higher (1283 DEG C). As the first member of alkaline earth metals, which belongs to the rare light metal, with low density, high melting point, high elastic modulus, high tensile strength, excellent thermal properties, good dimensional stability, low neutron absorption cross section, X - ray transmission and other many excellent performances, is the indispensable material in the aerospace, aviation, electronic and nuclear industry, usually called "super metal", "metal tip".īeryllium is light rare metal, atomic density is small (only 1.847g/cm). Beryllium ore has more than 30 kinds, beryl (3BeO - AlO3 - 6SiO2), phenacite (2BeO - SiO2), Chrysoberyl (BeO - Al2O3) have economic value, there is the most rich resource beryllium in the United State. Natural beryllium has three isotopes: beryllium 7, beryllium 8, beryllium 10, and 9Be is the only stable nuclide of beryllium. Beryllium metal is steel grey, the melting point of 1283 DEG C, the boiling point of 2570 DEG C, the density of 1.848g/cm. Beryllium, the atomic number is 4, belongs to the second cycle of the second main group elements, and is also the lightest alkaline earth metal element.