Beryllium, Be

Beryllium is a chemical element with the symbol Be and atomic number 4. A bivalent element, beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal. It is primarily used as a hardening agent in alloys, most notably beryllium copper. Commercial use of beryllium metal presents technical challenges due to the toxicity (especially by inhalation) of beryllium-containing dusts.

Beryllium is relatively rare element in both the Earth and the universe, due to the fact that it is not formed in conventional stellar nucleosynthesis. The element is not known to be necessary or useful for either plant or animal life.

Technical Data
Symbol Ba Density (20°C)/gcm-3 3.62
Atomic number 56 Melting point /°C 725
No. of naturally occurring isotopes 7 Boiling point /°C -1850
Atomic weight 137.33 ΔHfus/kJmol-1 7.8
Electronic configuration [Xe] 6s2 ΔHvap/kJmol-1 136
Ionization energy/kJmol I 502.7 Electrical resistivity  
II 965 (20°C)/ μohm cm 50
Metal radius/pm 222 Eo(M2-(aq)2e- →M(S))/V -2.91
Ionic radius/pm (6-coord) 13.5  
Evaporation Techniques
Temperature (oC) @Vap. Pressure Techniques Remarks
10-8 Torr 10-6 Torr 10-4 Torr Electron Beam Crucible Coil Boat
710 878 1000 Excellent Graphite & Vitreous Graphite Tungsten Tantalum & Tungsten Wets W, Mo & Ta. Metal powder & oxides are toxic. Evaporates easily.

Evaporation Materials
B2-5000-M Ingot (Please ask for sizes)
B2-5001-M Lumps 25mm and smaller
B2-5004-M Pieces 3-12mm
B2-5005-M Shot 3mm

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
B2-3000-F 0.001" (0.025mm)
B2-3001-F 0.002" (0.051mm)
B2-3002-F 0.003" (0.076mm)
B2-3003-F 0.004" (0.102mm)
B2-3004-F 0.005" (0.127mm)
B2-3005-F 0.006" (0.152mm)
B2-3006-F 0.007" (0.178mm)
B2-3007-F 0.008" (0.203mm)
B2-3008-F 0.009" (0.229mm)
Powder
B2-10000-P -100 mesh
B2-10000-P -200 mesh
B2-10000-P -325 mesh
Sheet
B2-4000-S 0.010" (0.254mm)
B2-4001-S 0.015" (0.381mm)
B2-4002-S 0.020" (0.508mm)
B2-4003-S 0.030" (0.762mm)
B2-4004-S 0.040" (1.016mm)
B2-4005-S 0.050" (1.270mm)