Beryllium Copper

Full Name
Beryllium Copper, BeCu

Beryllium copper (BeCu), also known as copper beryllium (CuBe), beryllium bronze and spring copper, is a copper alloy with 0.5—3% beryllium and sometimes other elements. Beryllium copper combines high strength with non-magnetic and non-sparking qualities. It has excellent metalworking, forming and machining properties. It has many specialized applications in tools for hazardous environments, musical instruments, precision measurement devices, bullets, and aerospace.

Beryllium copper is a non-ferrous alloy used in springs, spring wire, load cells, and other parts that must retain their shape under repeated stress and strain. It has high electrical conductivity, and is used in low-current contacts for batteries and electrical connectors.

8.26 g/cc
Tensile Strength, Ultimate
483 - 810 MPa
Tensile Strength, Yield
221 - 1172 MPa
Elongation at Break
45 %
Modulus of Elasticity
115 GPa
CTE, linear
16.7 µm/m-°C
Thermal Conductivity
118 W/m-K