Beryllium Copper, also known as High Beryllium Copper, is a high-performance alloy composed primarily of copper and beryllium. It combines high strength, excellent electrical and thermal conductivity, and outstanding corrosion resistance. Due to these properties, it is widely used in demanding industrial applications.
Basic Information
• Density: 8.4 g/cm³
• Melting Point: 870°C – 980°C
• Thermal Conductivity: 105 W/m·K
• Electrical Conductivity: 22–28% IACS (International Annealed Copper Standard)
• Coefficient of Thermal Expansion: 17 x 10⁻⁶ /°C
• Tensile Strength: 690 – 1380 MPa (depending on alloy grade and heat treatment)
• Yield Strength: 410 – 1240 MPa
• Elongation: 1 – 20%
• Hardness: 30 – 45 HRC (Rockwell Hardness)
• Chemical Composition: Be 1.8–2.0%, Cu balance, trace amounts of Ni, Co, etc.
• Common Conditions: A (Annealed), H (Age Hardened, such as H900, H1025, H1100, etc.)
Mechanical Properties (Aged Condition – H900)
• Tensile Strength: ≥ 1250 MPa
• Yield Strength: ≥ 1000 MPa
• Hardness: 38 – 42 HRC
• Elastic Modulus: 128 GPa
Key Features
• High Strength & Hardness: Beryllium copper offers much higher tensile strength and hardness compared to conventional copper alloys, making it ideal for high-strength springs, contacts, and connectors.
• Excellent Conductivity: Despite its strength, it retains good electrical and thermal conductivity, suitable for precision components in electrical and electronic applications.
• Corrosion & Wear Resistance: It performs reliably in harsh environments due to its outstanding corrosion and wear resistance.
• Good Machinability: Beryllium copper can be easily stamped, formed, machined, and welded.
• Non-Magnetic: Being non-magnetic, it is suitable for applications requiring magnetic neutrality.
Applications
• Electronics: Connectors, relays, switches, spring contacts
• Aerospace: Precision instruments, missile and satellite components
• Machinability: Easy to machine in annealed condition (A); requires careful processing in aged condition (H) due to increased hardness.
• Heat Treatment: C17200 can be strengthened through solution treatment followed by age hardening.
• Weldability: Fusion welding is generally not recommended; brazing or mechanical fastening is preferred.
Contact Us
If you’re interested in our beryllium copper products or have any questions, please feel free to contact us. Our professional team is ready to serve you with high-quality products and tailored solutions.
