Browse Our Collection
Get instant quotes that fit your budget perfectly.
Nial Sheets and Plates is a top-notch manufacturer and supplier located in Houston, USA, specializing in high-precision Kovar sheets and plates tailored for advanced industrial applications. Kovar, a unique nickel-iron-cobalt alloy, is designed for controlled thermal expansion and finds its place in the electronic and aerospace sectors. Nial offers Kovar in a variety of sizes and thicknesses, all crafted with tight tolerances to meet ASTM F15 and other international standards. Renowned for its outstanding performance in glass-to-metal and ceramic-to-metal seals, Nial’s Kovar sheets and plates are trusted for their reliability, consistency, and exceptional quality, especially in high-stability environments like vacuum systems and electronic enclosures.
This alloy consists of about 29% nickel, 17% cobalt, and the rest is iron, along with trace amounts of silicon and manganese. Kovar is specifically engineered to have a thermal expansion rate that closely matches borosilicate glass and certain ceramics, ensuring excellent dimensional stability in bonded assemblies. It boasts moderate mechanical strength, with a typical tensile strength ranging from 500 to 620 MPa, a yield strength of around 400 MPa, and good ductility, allowing for elongation of 20 to 30%. Kovar performs exceptionally well in high-vacuum and high-temperature settings, particularly after proper annealing.
| 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.
Kovar sheets and plates are crucial for high-reliability applications that require thermal expansion compatibility with glass or ceramics. In the electronics industry, they are vital for creating hermetically sealed components like feedthroughs, headers, and transistor enclosures. In aerospace and defense, Kovar is utilized for sensor housings, laser components, and vacuum tubes. It also plays a role in scientific instruments, optoelectronic devices, and medical equipment. With its stable expansion rate and sealing capabilities, Kovar is perfect for critical applications where mechanical integrity and thermal compatibility are essential.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
Discover high-quality products tailored to meet your unique needs and preferences.
Get instant quotes that fit your budget perfectly.
Houston, TX 77041
Copyright 2025 Nial Sheet and Plates. All rights reserved
