BERYLLIUM Metal Element Pellets 30 grams 98.5% - industrial grade purity. The metal is in pellet form. Materials analysis available upon request. Beryllium is atomic element No. 4 on the periodic table of elements. Beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal. Beryllium is primarily used as a hardening agent in alloys (most notably, beryllium copper). Beryllium-copper alloys are used in a wide variety of applications because of their electrical and thermal conductivity, high strength and hardness, nonmagnetic properties, along with good corrosion and fatigue resistance. These applications include the making of: spot-welding electrodes, springs, non-sparking tools and electrical contacts. Thin sheets of beryllium foil are used with X-ray detection diagnostics to filter out visible light and allow only X-rays to be detected. Beryllium is also used in the making of gyroscopes, various computer equipment, watch springs and instruments where light-weight, rigidity and dimensional stability are needed.