Official Answer
Answer
Beryllium Copper (typically Alloy 25) is specified when an application requires a combination of high strength, non-magnetic properties, and high electrical conductivity. Unlike steel, CuBe is 'non-sparking', making it mandatory in explosive environments (e.g., oil refineries or grain silos). It can be age-hardened to achieve tensile strengths comparable to some steels ($160-200$ ksi). Furthermore, its excellent thermal conductivity helps dissipate heat in high-speed bearing housings. However, its high cost and the toxicity of beryllium dust during machining (not coiling) are factors that limit its use to specialized aerospace and industrial cases.
