Kovar Machining Process

Kovar, also known as ASTM F15, is a nickel-iron-cobalt alloy with a coefficient of thermal expansion (CTE) similar to that of glass. This unique characteristic makes Kovar an excellent choice for applications that require a hermetic seal between metal and glass, such as electronic and electrical components in the semiconductor, telecommunications, and aerospace industries. To harness the full potential of Kovar, precision machining processes are employed to fabricate complex shapes and achieve tight tolerances. In this article, we will explore MetalProc’s expertise in Kovar machining and the steps involved in the process.




  1. Material Selection: MetalProc begins the Kovar machining process by carefully selecting high-quality Kovar alloy materials. The material composition and quality play a vital role in the performance and reliability of the final machined components.
  2. Design and Engineering: MetalProc works closely with clients to understand their specific requirements and designs. The engineering team utilizes advanced CAD/CAM software to translate the designs into precise machining instructions, ensuring optimal manufacturing efficiency and accuracy.
  3. Precision Machining: MetalProc employs state-of-the-art machining equipment and techniques to shape Kovar components. Various machining processes, including turning, milling, drilling, and grinding, are used to achieve the desired shapes, dimensions, and surface finishes. The use of advanced CNC (Computer Numerical Control) machines ensures exceptional precision and repeatability.
  4. Heat Treatment: Kovar components often undergo heat treatment processes to relieve stresses, improve mechanical properties, and enhance dimensional stability. MetalProc’s expertise in heat treatment ensures that the Kovar parts meet the required specifications and exhibit optimal performance.
  5. Surface Treatment: Depending on the application requirements, MetalProc offers a range of surface treatment options for Kovar components. These treatments can include passivation, electroplating, chemical etching, or other coatings to enhance corrosion resistance, improve electrical conductivity, or achieve specific aesthetic finishes.
  6. Quality Control: MetalProc maintains stringent quality control measures throughout the Kovar machining process. Advanced inspection techniques, such as dimensional measurements, visual inspections, and non-destructive testing, are employed to ensure that the machined components meet the required specifications and quality standards.
  7. Customization and Finishing: MetalProc understands that each client’s requirements may vary. Therefore, they offer customization options to tailor the Kovar components according to specific dimensions, shapes, and surface finishes. Additional finishing processes, such as polishing or deburring, can also be applied to meet the desired functional and aesthetic requirements.

MetalProc’s commitment to excellence in Kovar machining enables the production of high-quality components that meet the demanding needs of various industries. With their expertise in material selection, precision machining, heat treatment, surface treatment, and quality control, MetalProc ensures the reliable and efficient fabrication of Kovar parts. By collaborating with MetalProc, clients can leverage their advanced capabilities to achieve exceptional results in their Kovar-based applications.

Whether you require Kovar components for hermetic sealing, electronic packaging, or other specialized applications, MetalProc stands ready to deliver top-quality machining solutions. Contact us today to initiate an inquiry and explore the possibilities of collaborating on your Kovar machining project.