Invar Machining Process

Invar, also known as Invar 36 or FeNi36, is a nickel-iron alloy with a very low coefficient of thermal expansion (CTE). It was developed to address the challenges of dimensional stability in extreme temperature variations. Invar is widely used in applications where precise dimensional control is required, such as precision instruments, optical devices, scientific equipment, and aerospace components. MetalProc specializes in machining Invar to create high-quality components that meet stringent specifications. Let’s explore the Invar machining process in more detail:



  1. Material Selection: MetalProc carefully selects high-quality Invar alloy materials for machining. The composition and quality of the Invar alloy are critical to ensuring the desired properties and performance of the final machined components.
  2. Design and Engineering: MetalProc collaborates with clients to understand their specific requirements and designs. The engineering team uses advanced CAD/CAM software to translate the designs into machining instructions, considering the unique characteristics and challenges associated with machining Invar.
  3. Precision Machining: MetalProc employs state-of-the-art machining equipment and techniques to shape Invar components. Processes such as turning, milling, drilling, and grinding are used to achieve the desired shapes, dimensions, and surface finishes. The use of advanced CNC machines ensures precise and repeatable results.
  4. Heat Treatment: Invar components may undergo heat treatment processes to relieve stresses and optimize dimensional stability. MetalProc’s expertise in heat treatment ensures that the Invar parts meet the required specifications and exhibit minimal thermal expansion over a wide temperature range.
  5. Surface Treatment: MetalProc offers various surface treatment options for Invar components, depending on the application requirements. Surface 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 rigorous quality control measures throughout the Invar machining process. Advanced inspection techniques, including 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 the importance of customization in meeting clients’ unique needs. They offer options to tailor the Invar components according to specific dimensions, shapes, and surface finishes. Additional finishing processes, such as polishing or deburring, can be applied to achieve the desired functional and aesthetic requirements.

MetalProc’s expertise in Invar machining ensures the production of high-quality components with exceptional dimensional stability. By collaborating with MetalProc, clients can leverage their advanced capabilities to achieve precise and reliable results in their Invar-based applications.

If you require Invar components for precision instruments, optical devices, or aerospace applications, MetalProc is equipped to provide top-quality machining solutions. Contact us today to initiate an inquiry and explore the possibilities of collaborating on your Invar machining project.