Premium ASTM F15 Kovar Alloy (FeNi29Co17 / 4J29) Plate/Sheet
High-precision Kovar alloy plate/sheet with unmatched thermal expansion compatibility for hermetic sealing in electronics and aerospace applications. Exceptional thermal stability (CTE matches borosilicate glass and ceramics) ensures leak-proof seals in vacuum tubes, sensors, and laser housings. Ultra-flat surface finish (Ra <0.8μm) guarantees perfect bonding in microelectronic packaging and optoelectronic devices. Batch-certified material composition (29% Ni, 17% Co, 54% Fe) with full ASTM F15 compliance for critical aerospace and medical implant components. Global wholesale pricing advantage – direct mill sourcing enables bulk orders at 20% below market rates for industrial buyers. Ideal for: semiconductor lead frames, MEMS devices, satellite components, and precision instrumentation requiring thermal shock resistance.