Kovar Alloy CNC Machining
Kovar alloy is widely used across various specialized industries due to its unique properties, especially its low coefficient of thermal expansion and excellent mechanical stability.
What's Kovar Alloy?
Kovar® (ASTM F-15) is a nickel-cobalt ferrous alloy engineered for its controlled thermal expansion property, which closely matches borosilicate glass, ceramics, and certain semiconductors. This makes it the ideal choice for creating reliable, stress-free hermetic seals in critical electronic, optoelectronic, and aerospace applications.
JADECNC provides precision CNC machining services for Kovar alloy, delivering highquality metal components with tight tolerances and complex geometries. Our expertise ensures reliable performance in demanding applications such as electronic packaging, aerospace seals, and optical systems, where thermal expansion matching and dimensional stability are critical
Custom Kovar alloy CNC Machining Manufacture In China
Why Choose Kovar?
|
Property |
Typical Value |
Notes |
|---|---|---|
|
CTE (20–400°C) |
~5.1 × 10⁻⁶/K |
Matches borosilicate glass & alumina ceramics |
|
Density |
8.35 g/cm³ |
Heavier than aluminum, lighter than stainless steel |
|
Thermal Conductivity |
17–18 W/(m·K) |
Requires careful thermal management in machining |
|
Machinability |
Moderate to Difficult |
Gummy, work-hardening, requires sharp tooling |
Kovar Alloy Machining Capabilities of JADE-CNC
Precision Milling
Multi-axis machining of complex housings, frames, and seals
Turning & Boring
High-tolerance cylindrical and conical components
Drilling & Tapping
Micro-hole drilling and threaded feature machining
Surface Finishing
Grinding, polishing, and specialized coating (Ni/Au plating)
Key Challenges in Kovar CNC Machining?
JADE-CNC combines metallurgical knowledge with advanced CNC technology to deliver Kovar parts that meet the strictest standards for precision, sealing integrity, and performance.
Gummy Nature and Work Hardening
The material is sticky, prone to producing long chips and adhering to the cutting tool, leading to poor surface finish. It also work-hardens rapidly during cutting, increasing cutting forces and accelerating tool wear.
Poor Heat Dissipation
Low thermal conductivity causes heat to concentrate in the cutting zone, easily leading to tool overheating, reduced tool life, and potential thermal distortion of the workpiece.
Stringent Precision Requirements
Often used for precision seals, demanding extremely tight dimensional tolerances (typically under ±0.025mm). Any vibration or tool deflection during machining can render the part out of specification.
Residual Stress and Distortion
Internal stresses induced during machining may cause subsequent part distortion, affecting final dimensional stability and the flatness of sealing surfaces.
Demanding Post-Processing Requirements
Parts frequently require electroplating (e.g., nickel, gold) to ensure solderability and corrosion resistance. This necessitates a uniform, clean, defect-free machined surface, adding complexity to the process.
Industrial applications of Kovar Alloy
Kovar’s unique properties, such as its low coefficient of thermal expansion, excellent weldability, high strength, and magnetic shielding capabilities, make it a highly versatile material across many demanding industries.
Semiconductors
Hermetic IC packages, transistor housings, MEMS enclosures
Optoelectronics
Laser diode headers, fiber-optic seals, lens mounts
Defense
Sealed sensors, avionics packages, satellite components
Telecommunication
Applied in high-performance electronics, including RF and microwave component packaging.
Get Your Custom Kovar Alloy Parts Today!
From concept to final product, JADE-CNC is committed to delivering exceptional quality and an impeccable delivery experience for every order. Whether you need a small quantity of custom parts, prototype fabrication, or high-volume, high-precision components, our experienced engineering team is ready to assist you at any time. Contact us today to get a free sample or a quote for your project. Let’s establish a partnership to make your CNC milled parts precise, durable, and cost-effective.
FAQ
No MOQ. We really understand the RD phase specialize in supporting projects from a single prototype through to low-volume production. We understand R&D needs and apply the same rigorous process and quality control, whether for one part or one hundred.
Please provide your 3D model (STEP/IGES preferred) and 2D drawings (with critical dimensions, tolerances, material, and finish specified). We will provide a transparent, detailed quotation based on machining time, material, complexity, and post-processing, with no hidden costs.
For parts of standard complexity, our typical CNC machining lead time is 7-15 working days (from confirmed drawings/payment). We offer expedited service with delivery in 1-3 working days, subject to part evaluation and an additional rush fee.
Our standard machining tolerance is ±0.025 mm (±0.001″). For critical features, we can achieve ±0.005 mm (±0.0002″) or better, depending on part geometry and material. We will perform a DFM analysis and confirm all critical tolerances with you upon receiving your drawings.
Yes, it’s part of our standard process. We perform First Article Inspection (FAI) and can provide inspection reports (e.g., dimensional check sheets, CMM data for critical features) upon request. Our full suite of inspection tools (calipers, micrometers, CMM, etc.) ensures every batch meets your specifications.
We stock various aerospace and commercial-grade metals and plastics, such as Aluminum (6061, 7075), Stainless Steel (304, 316), Carbon Steel, Brass, PEEK, Delrin, etc. For critical projects, we can provide mill certificates for the raw materials upon request.
Your intellectual property is our top priority. We are glad to sign a legally-binding Non-Disclosure Agreement (NDA) before any project begins. All digital files are stored on encrypted servers with access strictly limited to the project team.
We are committed to 100% customer satisfaction. If a non-conformance is confirmed to be our manufacturing fault, we will remake or repair the parts at no cost and cover the resulting shipping fees. We ask that you inspect the parts promptly upon receipt and provide a detailed description with photos/video.
We provide various post-processing services, including: Bead blasting, Anodizing (Type II & III, various colors), Electroless Nickel Plating, Passivation, Electroplating, Powder Coating, and Silk Screening. We can advise based on your functional or aesthetic requirements.
For new clients, our standard terms are “50% deposit to start production, 50% balance before shipment.” We accept international payment methods like Wire Transfer and PayPal. Terms can be discussed for established, long-term partnerships.