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Beryllium copper, also known as copper beryllium, beryllium bronze, and spring copper, is a copper alloy with 0.5–3% beryllium. Copper beryllium alloys are often used because of their high strength an…
Beryllium Copper alloy exhibits greatest ultimate tensile strength up to 1400MPa. Of the various Copper alloys, Beryllium Copper is the strongest of them all.
Beryllium copper is also a better conductor of heat and electricity. As noted above, beryllium copper won't spark, and this is another significant benefit the metal alloy has over steel.