Copper-Silver Brazing Alloys – Precision Joining for Demanding Environments
At Advanced Hermetic Solutions, copper-silver brazing alloys are essential to our metallurgical toolkit—offering high conductivity, corrosion resistance, and mechanical strength for robust, vacuum-tight joints in critical assemblies.
Material Composition & Properties
Typical Composition
- Silver (Ag): 15–72%
- Copper (Cu): Balance
- Phosphorus (P): 0–7% (optional, enhances flow on copper)
- Zinc (Zn): 0–30% (optional, lowers melting point)
Physical Properties
- Melting Range: 643–825°C (1190–1517°F)
- Density: 9.7–10.4 g/cm³
- Thermal Conductivity: 180–420 W/m·K
- Electrical Conductivity: 23–49 × 10⁶ S/m
- Appearance: Ranges from silvery-white to light copper
Applications in Hermetic Engineering
Vacuum Electronics
Used in waveguides, klystrons, and sealed RF enclosures requiring thermal and electrical continuity across joints.
Direct Ceramic Brazing
Alloys with phosphorus can directly wet oxide ceramics, eliminating costly metallization in many designs.
Medical & Aerospace Packages
High-integrity bonds that maintain seal performance under pressure, vibration, and sterilization conditions.
Sensor & Optical Assemblies
Enables precision sealing of housings for fiber optics, pressure transducers, and infrared sensors in harsh environments.
Cryogenic Applications
Maintains ductility and joint integrity at low temperatures, suitable for superconducting and space systems.
Join with Confidence – Engineer with AHS
From prototyping to production, our team supports material selection, joint design, and precision brazing of copper-silver alloys. Let’s build high-reliability hermetic assemblies together.
Request a Brazing Consultation