Full Name

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

Brass has higher malleability than bronze or zinc. The relatively low melting point of brass (900 to 940 °C, depending on composition) and its flow characteristics make it a relatively easy material to cast. By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses.

Brass in Telecommunications

Brass is the most popular material for manufacturing coaxial connectors and adapters because of its combination of physical and electrical properties, along with its low cost and widespread availability.

Brass is a relatively easy material to machine and fabricate, which makes it an ideal choice for producing connectors and adapters that require precise tolerances and intricate shapes. This is important because coaxial connectors and adapters must maintain close dimensional tolerances in order to ensure proper electrical performance.

Brass also has excellent electrical conductivity which is critical for RF components. These components are used to transfer high-frequency signals, and the material must be able to conduct these signals without introducing any significant electrical losses or distortions. Brass has a low resistance to electrical flow, which helps to minimise insertion and return losses, and ensure clear signal transmission.

Perhaps one of the most important considerations, compared to materials with similar electrical properties brass is a relatively inexpensive material compared to other metals, which makes it an attractive choice for general purpose applications.

7.20 - 8.86 g/cc
Tensile Strength, Yield
34.5 - 683 MPa
Modulus of Elasticity
82.0 - 117 GPa
Specific Heat Capacity
0.380 J/g-°C
Tensile Strength, Ultimate
124 - 1030 MPa
Elongation at Break
32.0 %
Electrical Resistivity
0.00000656 ohm-cm
CTE, linear
18.0 - 26.0 µm/m-°C
Thermal Conductivity
124 W/m-K