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Yunus Sheets and Plates, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of Kovar Foil, known for its exceptional precision and quality. With years of experience in the metals industry, this company provides foils that adhere to strict international standards. The Kovar Foil from Yunus Sheets and Plates comes in a variety of thicknesses and sizes, tailored to meet a wide range of industrial needs. The company prides itself on its reliable production methods, outstanding dimensional accuracy, and consistent material properties, making it a go-to partner for clients in the electronics, aerospace, and precision engineering fields who are in search of high-performance, trustworthy Kovar Foil solutions.
Kovar Foil is mainly made up of nickel (29%), cobalt (17%), and iron (the rest), meticulously designed to ensure a coefficient of thermal expansion that works well with borosilicate glass. Its mechanical properties boast impressive strength, ductility, and resistance to corrosion, allowing it to remain stable even under thermal cycling. The foil also has excellent welding and soldering capabilities, which are crucial for creating hermetic seals in electronic assemblies. Its blend of dimensional stability, toughness, and low thermal expansion guarantees reliable performance in precision applications, especially where metal-to-glass or metal-to-ceramic joints are necessary.
| Standard Specification : | UNS K94610 | Werkstoff Nr 1.3981 | DIN 17745 | ASTM F15 | AMS 7726 | AFNOR NF A54-301 | S.E.W 385 |
| Dimensions : | ASTM, ASME, and API |
| Sheets Thickness : | Range from .008″ to .0125″ |
| Plates Thickness : | Ranges from .0125″ to 5.00″ |
| Sheets/Plates Width : | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Sheets/Plates Length : | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Tempers : | Annealed, 1/4, 1/2 Hard, 3/4 Hard, Full Hard |
| Hardness : | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Value Added Service : | Cladding, Heat Treatment, Annealed, Pickling, Polish, Rolling, Cutting, Bending, Forging, Minor Fabrication Etc. |
| Chemical Analysis | |
| Cr | 20 nom |
| Ni | 35 nom |
| Mo | 10 nom |
| Co | 35 nom |
| Material | Condition | Yield Strength (0.1% Offset) | Tensile Strength | Elongation % | ||
|---|---|---|---|---|---|---|
| psi | MPa | psi | MPa | |||
| Alloy K Kovar | Annealed | 49,000 | 340 | 75,000 | 520 | 42 |
| ASTM | UNS | Workstoff | AMS | DIN | AFNOR | S.E.W |
| F15 | K94610 | 1.3981 | 7726 | 17745 | NF A54-301 | 385 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Kovar foil is a high-performance alloy made primarily of iron, nickel and cobalt, which offers exceptional benefits in specialized applications. Its low thermal expansion makes it ideal for glass coatings on metals in electronics, ensuring stability under temperature changes Coatings are also highly resistant to thermal cycling, providing durability in internal environments is strong. Its excellent mechanical properties and ease of manufacture make it suitable for precisely complex designs, while the ability to maintain excellent performance at high temperatures ensures reliable performance at aerospace, electronics and pharmaceutical industries.
Kovar foil, an alloy of iron, cobalt and nickel, is primarily used in applications requiring low thermal expansion (CTE) and high mechanical strength In the electronics industry it is often used for hermetic sealing , especially vacuum tubes, semiconductor packages and sensors Cover foil used in construction With the ability to provide thermal expansion of glass the combination meets materials with different thermal properties in air and space as well as coatings on soft surfaces in the automotive industry make them ideal for use in glass and metal coins.
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