Answer
Umuringa wa Beryllium (mubisanzwe Alloy 25, UNS C17200) ukoreshwa mugukomeza kuzenguruka impeta mu bidukikije aho ibintu bidakanguka bisabwa mu mutekano (urugero, ikirere giturika) cyangwa aho hakenewe ibintu bitari magnetiki (urugero: imashini za MRI cyangwa ibikoresho bya elegitoroniki byoroshye). CuBe is precipitation-hardened to achieve tensile strengths comparable to alloy steels (up to 1400 MPa). However, its modulus of elasticity $E$ is lower (approx. 131 GPa) compared to steel (200 GPa). This means a CuBe ring will have a lower radial grip for the same dimensions. Designers must compensate for this by increasing the interference fit. Additionally, CuBe has excellent electrical conductivity, making it useful as a ground path in some RF connector assemblies.
