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Smith Fittings, a top-notch manufacturer and supplier located in Canberra, Australia, is all about crafting high-quality **Kovar Sheets and Plates** that offer remarkable thermal stability and precision. These sheets and plates are well-known for their controlled expansion properties, making them perfect for applications that need a strong bond between metal and glass or ceramics. At Smith Fittings, we take pride in ensuring that every Kovar product adheres to international standards, providing exceptional dimensional accuracy, corrosion resistance, and strength. Our Kovar Sheets and Plates find their way into various industries, including aerospace, electronics, and scientific fields, where reliability, precision, and performance under extreme temperature changes are crucial.
**Kovar Sheets and Plates** are made up of roughly **29% nickel, 17% cobalt, and the rest iron**, creating a controlled expansion alloy that aligns perfectly with the thermal expansion of borosilicate glass and ceramics. This material boasts **a tensile strength of about 520 MPa**, excellent machinability, and impressive thermal stability. Kovar holds its mechanical integrity even when temperatures fluctuate, featuring low thermal conductivity and magnetic permeability. These characteristics make it a go-to choice for precision engineering and electronic applications that demand tight dimensional control and long-lasting durability.
| 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 Sheets and Plates provide excellent thermal expansion properties, making them ideal for applications requiring good compatibility with materials such as glass and ceramics Due to low coefficient of thermal expansion they maintain stability under temperature changes. Kovar also has good mechanical strength, corrosion resistance and strong weldability, making it suitable for harsh environments. Its magnetic properties are stable, making it useful in electronics and aerospace applications, especially for hermetic sealing of components. These features make Kovar ideal for high-performance precision applications.
You’ll find **Kovar Sheets and Plates** being utilized across **aerospace, electronics, telecommunications, and scientific instrumentation** sectors. They’re perfect for **glass-to-metal seals, electronic components, semiconductor packages, vacuum devices, and laser systems**. In the aerospace and defense industries, Kovar guarantees reliable hermetic sealing in challenging environments. It’s also used in **electrical feedthroughs, optical devices, and measurement instruments**, where precision is key. With its unmatched thermal compatibility and mechanical strength, Kovar is essential for precision components that need to perform consistently under varying thermal and mechanical stresses.
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