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Al Shakru Sheets and Plates, a premier manufacturer and supplier based in Dubai, UAE, specializes in producing high-quality Kovar Foils engineered to satisfy the demanding requirements of the aerospace, electronics, and engineering industries. Celebrated for its accurate thermal expansion characteristics and superb dimensional stability, Kovar Foil is ideal for uses that call for metal-to-glass or metal-to-ceramic bonding. At Al Shakru Sheets and Plates, we take great pride in manufacturing our Kovar Foils with remarkable precision, corrosion resistance, and durability, guaranteeing dependable performance in demanding conditions. We are dedicated to supplying precision-engineered materials that meet international quality benchmarks for both industrial and scientific applications.
Kovar Foil is a nickel-cobalt iron-based alloy made up of roughly 29% nickel, 17% cobalt, with iron making up the remainder . This unique composition results in a thermal expansion rate that matches closely with borosilicate glass and ceramics. It offers a tensile strength of about 520 MPa , remarkable thermal stability, and solid ductility. Kovar also has low thermal conductivity and magnetic permeability, which makes it excel in settings with variable temperatures. Because it retains its structural integrity, it is a preferred option for precision sealing and electronic components.
| 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 |
Our products are supplied with mill test certificates as well as third-party test certificates, guaranteeing the highest levels of quality and compliance.
Kovar foilis a high-performance alloy composed principally of iron, nickel and cobalt, which delivers outstanding advantages in specialized applications. Its low thermal expansion makes it perfect for glass coatings on metals in electronics, guaranteeing stability under temperature changes Coatings also show high resistance to thermal cycling, delivering durability in internal environments is strong. Its superb mechanical properties and ease of fabrication make it well suited for precisely complex designs, while its capacity to sustain excellent performance at high temperatures ensures dependable performance in aerospace, electronics and pharmaceutical industries.
Kovar Foil is used across industries that demand exact thermal compatibility and stability. It serves an essential function in the production of glass-to-metal seals , electronic components , vacuum devices , semiconductor packages , and instrument housings . The aerospace and defense sectors rely on it for hermetic sealing applications and electronic assemblies subjected to extreme conditions. Within scientific instrumentation, Kovar Foil ensures precision and dependability by minimizing distortion under thermal stress. Its distinctive expansion properties and toughness render it indispensable for high-performance electrical, optical, and electronic applications.
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