Browse Topic: Beryllium
Manufacturing workpieces with unique material characteristics can provide machining challenges. The metal beryllium is an excellent example. Beryllium is two-thirds the weight of aluminum and six times as stiff as steel. It has a high melting point and a very low range of thermal expansion. Those attributes deliver performance that is crucial in precision applications such as aircraft components, spacecraft, communication satellites and optics. However, beryllium is also hard and brittle and produces powder instead of chips when machined, therefore requiring special machining techniques to avoid cracking. It is also expensive, about $1,500 a pound. And finally, it is toxic and causes severe allergic reactions in those sensitive to it. As such, only a few shops in the United States are the lone providers of parts made from this tricky material
Manufacturing workpieces with unique material characteristics can provide machining challenges. The metal beryllium is an excellent example. Beryllium is two-thirds the weight of aluminum and six times as stiff as steel. It has a high melting point and a very low range of thermal expansion. Those attributes deliver performance that is crucial in precision applications such as aircraft components, spacecraft, communication satellites and optics. However, beryllium is also hard and brittle and produces powder instead of chips when machined, therefore requiring special machining techniques to avoid cracking. It is also expensive, about $1,500 a pound. And finally, it is toxic and causes severe allergic reactions in those sensitive to it. As such, only a few shops in the United States are the lone providers of parts made from this tricky material. One of those is a California shop that combines a deliberate, highly structured production process; data-driven manufacturing analytics; precise
This specification covers beryllium in the form of bar, rod, tubing, and shapes fabricated from beryllium powder consolidated by cold isostatic pressing (CIP) and sintering
This specification covers beryllium in the form of bars, rods, tubing, and machined shapes fabricated from vacuum hot pressed powder
This specification covers beryllium in the form of bars, rods, tubing, and machined shapes fabricated from vacuum hot pressed powder
This specification covers beryllium in the form of bars, rods, tubing, and machined shapes from vacuum hot pressed powder
This specification covers beryllium in the form of sheet and plate produced by hot rolling beryllium
This specification covers a magnesium alloy in the form of welding wire
This specification covers an aluminum alloy in the form of welding wire
A paper describes how, based on a structural-thermal-optical-performance analysis, it has been determined that a single, large, hollow corner cube (170-mm outer diameter) with custom dihedral angles offers a return signal comparable to the Apollo 11 and 14 solid-corner-cube arrays (each consisting of 100 small, solid corner cubes), with negligible pulse spread and much lower mass. The design of the corner cube, and its surrounding mounting and casing, is driven by the thermal environment on the lunar surface, which is subject to significant temperature variations (in the range between 70 and 390 K). Therefore, the corner cube is enclosed in an insulated container open at one end; a narrow-bandpass solar filter is used to reduce the solar energy that enters the open end during the lunar day, achieving a nearly uniform temperature inside the container. Also, the materials and adhesive techniques that will be used for this corner-cube reflector must have appropriate thermal and mechanical
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