Introduction
- C17200(CuBe2) beryllium copper alloy is a non-magnetic, wear-resistant copper alloy composed primarily of copper (Cu) and beryllium (Be), with copper content exceeding 98% and beryllium content ranging from 1.8% to 2.0%. It offers high strength, excellent electrical conductivity, ease of machining, good corrosion resistance, and non-sparking properties. This alloy is widely used in the manufacture of springs, contactors, electrical connectors, non-sparking tools, and in industries such as electrical, aerospace, tooling, and precision instruments. It is suitable for joining by welding, brazing, and other methods, with heat treatment being key to enhancing its mechanical properties.
- Strength and Hardness: C17200 beryllium copper has the highest strength and hardness among all copper alloys, especially after heat treatment, where its strength can be comparable to certain steels.
- Excellent Electrical and Thermal Conductivity: While the addition of beryllium slightly reduces copper’s electrical and thermal conductivity, C17200 still maintains high conductivity and thermal efficiency, making it suitable for electrical applications.
- Good Corrosion Resistance: This alloy demonstrates excellent corrosion resistance in most environments, including industrial atmospheres and marine conditions, making it ideal for harsh conditions.
- Non-Sparking Properties: C17200 does not produce sparks when struck, making it an ideal material for non-sparking tools in industries such as oil and gas, chemicals, and other hazardous environments.
- Heat Treatment: C17200 can undergo quenching and tempering to enhance its hardness and strength. Quenching is typically done at temperatures between 880-900°C, and tempering is performed at temperatures ranging from 315°C to 375°C.
Chemical Composition
- Be: 1.8%~2.0%
- Ni+Co: 0.2% min
- Ni+Co+Fe: 0.6% max
- Cu+Be+Ni+Co+Fe: 99.5% min
Alloy Standard
Physical Properties
- Density: 8.3 g/cm³
- Electrical conductivility: 20 IACS%(20°C)*(value for the lowest temper class)
- Modulus of elasticity: 130 GPa
- Coefficient of thermal expansion: 17.5 10-6/K
- Thermal conductivity: 105 W/(m*K)
Mechanical Properties
Application
- Springs, Burn-in Sockets & Test Sockets, Switches, Contactors, Electrical Connectors: With its high strength and excellent electrical conductivity, C17200 is ideal for manufacturing these high-performance components.
- Non-Sparking Tools: Used in industries such as oil drilling and chemical processing, C17200 helps prevent spark-related safety hazards.
- Electrical and Aerospace Applications: Widely used in electrical connectors, aerospace parts, and precision instrument manufacturing.
- Molds and Tools: Its wear resistance and high hardness make it suitable for the production of precision molds and industrial tools.
