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Beryllium Oxide

Formula: BeO
Alternate Names: Beryllia, glucina, glucinium oxide

Oxide Weight25.01
Formula Weight25.01
If this formula is not unified correctly please contact us.
DENS - Density (Specific Gravity) 3.00
GSPT - Frit Softening Point 2500C

Beryllium is a specialty high temperature fluxing oxide available as a pure material in a wide variety of sizes and shapes. It acts as a refractory alone. It can also be used as a modifier and opacifier at lower temperatures. It is manufactured from Beryl, an igneous mineral silicate of beryllium and aluminum containing about 12-14% beryllium. Emerald is beryl stained with chromium, aquamarine is blue stained beryl.

It is a very expensive material and thus is only used if another cannot be substituted.

Beryllia is valuable for producing ceramics with high thermal conductivity (dependent on purity), particularly in the lower temperature ranges. Its thermal conductivity is 4x alumina at high temperatures and even greater at lower temperatures. Beryllium has excellent dielectric properties, outstanding resistance to wetting and corrosion by many metals and non-metals. It's mechanical properties are only slightly less than that of 95% alumina ceramics. It has valuable nuclear properties including an exceptionally low thermal neutron absorption cross section. Like alumina, it is readily metallized by thick and thin film techniques.

Softening Temperature: >2000
Thermal Conductivity (Btu/h/sq. ft/degree F/ft): 150
CTE, 10 -6/degree F, at..
212F: 5.4
932F: 7.4
1832F: 8.9
Tensile Strength, psi (room temperature): 18,000-20,000
(1000C): 5000
Compressive Strength, (room temperature): 200,000
(2000F): 60,000
Transverse Strength, psi: 35,000
Modulus of Elasticity, psi: 40,000-45,000

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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Beryllium Oxide" descrip="" searchkey="Beryllia, glucina, glucinium oxide" loi="0.00" casnumber=""> <oxides> <oxide symbol="BeO" name="Beryllium Oxide" status="" percent="100.000" tolerance=""/> </oxides> </material>

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