Kovar（Benchmark dealer buy-in price）
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Monthly Average(High)
About Kovar（Benchmark dealer buy-in price） Data
Kovar is an iron-nickel-cobalt alloy (comprising 29% Ni and 17% Co) specifically engineered for glass and ceramic sealing applications. Its most significant property is its controlled thermal expansion, which is designed to match that of borosilicate glass and alumina ceramics..Yen per kg.
Matched Thermal Expansion: Its coefficient of thermal expansion (CTE) closely matches that of hard glasses and ceramics from room temperature up to approximately 450°C, preventing stress-induced cracks during thermal cycling.
Superior Sealing Properties: Provides excellent wetting characteristics with glass, enabling reliable vacuum-tight (hermetic) seals.
Structural Stability: Maintains a stable austenitic structure over a wide temperature range, resistant to phase transformation even at cryogenic temperatures.
Good Workability: Can be readily deep-drawn, machined, welded, and brazed using standard industrial processes