Cast Beryllium Bronze

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Copper Alloy

Cast beryllium bronze is a copper alloy primarily composed of copper and beryllium, with the beryllium content typically ranging between 0.5% and 2%. It is the highest strength copper alloy, known for its excellent mechanical properties, wear resistance, corrosion resistance, and high-temperature performance.

Cast beryllium bronze is one of the highest strength and hardness alloys in the copper alloy family, with significantly improved mechanical properties after heat treatment.
It offers outstanding corrosion resistance, particularly in harsh environments such as seawater and salt spray.
The alloy retains good mechanical properties even at high temperatures.
Cast beryllium bronze has good fluidity and castability, enabling the creation of complex-shaped parts.
Its high hardness and strength provide excellent wear resistance.
With its high strength and hardness, cast beryllium bronze is ideal for components that endure extreme loads.

Specifications

Cast Beryllium Bronze Plate/Sheet
Thickness	5mm-300mm
Width	200mm-1000mm
Length	1000mm-2000mm
Cast Beryllium Bronze Rod
Diameter	10mm-500mm
Length	500mm-2000mm
Cast Beryllium Bronze Wire
Diameter	1mm-10mm

Chemical Composition

Copper (Cu)	Rest
Beryllium (Be)	1.8%-2.1%
Cobalt (Co)	0.2%-0.6% (to enhance age hardening effect)
Other Elements	≤ 0.5% (e.g. nickel and iron)

Physical Properties

Density	8.25-8.4g/cm³
Melting Point	960°C-1025°C
Thermal Conductivity	105-130 W/(m·K) (20°C)
Electrical Conductivity	16%-25% IACS (International Annealed Copper Standard)
Coefficient of Thermal Expansion	17×10⁻⁶/K（20°C-300°C

Mechanical Properties

Tensile Strength	Solid solution state	550-800 MPa
Tensile Strength	After aging treatment	950-1200 MPa
Yield Strength	After aging treatment	≥ 600 MPa
Elongation at Break	Depending on heat treatment condition	1%-10%
Hardness	Solid solution state	200-300 HB
Hardness	After aging treatment	280-420 HB