High strength and ductility with tensile strength of 450-550 MPa and elongation of 30%-40%.
Excellent electrical performance with low resistivity, suitable for high-precision electronic equipment.
Good machinability and formability, compatible with turning, milling, and drilling processes.
Superior welding performance, suitable for laser welding, electron beam welding, and brazing.
Widely used in electronic packaging, aerospace, vacuum electronic devices, and optical instruments.
Heat treatment includes solid solution, aging, and annealing for enhanced ductility and processability.
Density of 8.36 g/cm³ and melting point of 1449°C, ensuring stability in high-temperature environments.
FAQ:
What are the main applications of Kovar 4J29 wire?
Kovar 4J29 wire is widely used in electronic packaging, aerospace, medical devices, and optical fields due to its low thermal expansion coefficient and excellent mechanical properties.
How is Kovar 4J29 wire processed?
Kovar 4J29 wire can be processed using conventional methods like forging, rolling, and stretching. It also supports high-energy welding techniques such as laser and electron beam welding.
What is the heat treatment process for Kovar 4J29 wire?
The heat treatment includes solid solution treatment at 1000°C-1100°C, aging at 700°C-800°C for 2-3 hours, and annealing at 800°C-1000°C with air cooling to enhance ductility and processability.