Professional Kovar alloy machining services for electronics, aerospace, and precision instruments. Expert glass-to-metal sealing solutions with ultra-tight tolerances down to ±0.0005″.

Kovar is a specialized iron-nickel-cobalt alloy (29% Ni, 17% Co, 54% Fe) engineered for applications requiring precise thermal expansion matching with glass and ceramics.
Coefficient of thermal expansion (CTE) matches borosilicate glass, ensuring dimensional stability across temperature ranges from -196°C to 500°C.
Excellent glass-to-metal sealing properties for electronic packaging, vacuum tubes, and hermetic enclosures requiring leak-tight performance.
Superior machinability with specialized tooling and techniques, achieving tight tolerances for critical electronic and aerospace components.
Controlled magnetic permeability and electrical conductivity, ideal for electronic packages, lead frames, and RF shielding applications.
Excellent resistance to atmospheric corrosion and oxidation, ensuring long-term reliability in harsh environmental conditions.
Outstanding welding characteristics for assembly of complex components, maintaining thermal expansion properties after welding.
Advanced CNC machining capabilities for precision Kovar components across electronics, aerospace, and scientific instrument industries.
Kovar’s unique properties make it essential for demanding applications requiring precise thermal expansion control and glass sealing capabilities.
Comprehensive manufacturing process ensuring consistent quality and precision for every Kovar component.
High-purity Kovar alloy sourcing with material certification and chemical composition verification.
Advanced CNC operations using specialized tooling optimized for Kovar’s unique properties.
Stress relief annealing to optimize mechanical properties and dimensional stability.
Precision grinding, polishing, and surface treatments to achieve specified requirements.
Comprehensive dimensional and functional testing before shipment.
Richconn is a leading Chinese manufacturer specializing in precision CNC machining and custom Kovar parts manufacturing. With advanced equipment and skilled engineers, we deliver high-quality components for electronics, aerospace, and precision instrument applications.
Manufacturing Experience
Successfully Completed
Worldwide Customers
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Advanced manufacturing capabilities, strict quality control, and expert engineering support for your Kovar machining projects.
State-of-the-art CNC machines and specialized tooling for precision Kovar machining with tight tolerances.
Skilled engineers and machinists with extensive experience in Kovar alloy properties and applications.
Efficient production processes and project management ensuring on-time delivery for your critical projects.
Comprehensive quality control system with ISO 9001 certification and rigorous testing protocols.
Dedicated project managers and technical support throughout the entire manufacturing process.
Cost-effective solutions without compromising quality, backed by transparent pricing and no hidden fees.
Common questions about Kovar parts manufacturing and our services.
Kovar is a nickel-iron-cobalt alloy with a coefficient of thermal expansion that closely matches glass, making it ideal for glass-to-metal seals and electronic packaging applications.
We can achieve tight tolerances up to ±0.0005″ (±0.013mm) for critical dimensions, depending on part geometry and specifications.
Lead times vary from 5-22 days depending on part complexity, quantity, and current production schedule. Rush orders can be accommodated.
Yes, we support both prototyping and full-scale production, from single parts to thousands of pieces with consistent quality.
We are ISO 9001:2015 certified and follow ASTM F15 standards for Kovar materials, with complete traceability documentation.
Yes, we offer various surface treatments including electroplating, passivation, and specialized coatings to meet your specific requirements.
Ready to start your precision Kovar machining project? Contact our experts for a free consultation and competitive quote.