Custom Kovar Parts
Precision CNC Machining & Glass Sealing Solutions

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″.

±0.0005″
Tight Tolerances
5-Axis
CNC Machining
ISO 9001
Quality Certified
Custom Kovar Parts CNC Machining

Kovar Material Properties & Advantages

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.

 

Low Thermal Expansion

Coefficient of thermal expansion (CTE) matches borosilicate glass, ensuring dimensional stability across temperature ranges from -196°C to 500°C.

 

Hermetic Sealing

Excellent glass-to-metal sealing properties for electronic packaging, vacuum tubes, and hermetic enclosures requiring leak-tight performance.

 

Precision Machining

Superior machinability with specialized tooling and techniques, achieving tight tolerances for critical electronic and aerospace components.

 

Electrical Properties

Controlled magnetic permeability and electrical conductivity, ideal for electronic packages, lead frames, and RF shielding applications.

 

Corrosion Resistance

Excellent resistance to atmospheric corrosion and oxidation, ensuring long-term reliability in harsh environmental conditions.

 

Weldability

Outstanding welding characteristics for assembly of complex components, maintaining thermal expansion properties after welding.

Custom Kovar CNC Machining Services

Advanced CNC machining capabilities for precision Kovar components across electronics, aerospace, and scientific instrument industries.

 CNC Milling Services

  • • 3-axis, 4-axis, and 5-axis CNC milling
  • • Complex geometries and intricate features
  • • Surface finishes Ra 0.1-3.2μm
  • • Tight tolerances ±0.0005″ (±0.013mm)

 CNC Turning Services

  • • Precision turning and boring operations
  • • Swiss-type machining for small parts
  • • Thread cutting and knurling
  • • Cylindrical components and shafts

 Wire EDM Services

  • • Precision wire electrical discharge machining
  • • Complex profiles and sharp corners
  • • Minimal material stress and distortion
  • • Ultra-fine surface finishes

 Micromachining Services

  • • Micro-scale precision machining
  • • Small batch and prototype production
  • • Specialized tooling for Kovar alloy
  • • Quality inspection and measurement

Technical Specifications

Material: Kovar ASTM F15
Composition: 29% Ni, 17% Co, 54% Fe
Density: 8.36 g/cm³
Melting Point: 1455°C
Thermal Expansion: 5.9 × 10⁻⁶/°C
Yield Strength: 55,000 PSI
Tensile Strength: 75,000 PSI
Elongation: 30%

Quality Control

  • • Material certification and traceability
  • • Dimensional inspection with CMM
  • • Surface finish measurement
  • • Thermal expansion testing
  • • Leak testing for hermetic seals
  • • ISO 9001:2015 quality management

Kovar Parts Applications & Industries

Kovar’s unique properties make it essential for demanding applications requiring precise thermal expansion control and glass sealing capabilities.

 

Electronics & Semiconductors

  • • Hermetic packages and enclosures
  • • IC lead frames and headers
  • • Transistor bases and caps
  • • Microwave tube components
  • • RF shielding applications
 

Optical & Glass Sealing

  • • Glass-to-metal seals
  • • Vacuum tube envelopes
  • • CRT and X-ray tube components
  • • Optical feedthroughs
  • • Laser diode packages
 

Aerospace & Defense

  • • Spacecraft components
  • • Navigation system housings
  • • Satellite electronics packaging
  • • Military electronics sealing
  • • Avionics components
 

Medical Devices

  • • Implantable device housings
  • • Pacemaker components
  • • Surgical instrument parts
  • • Medical imaging equipment
  • • Diagnostic device sealing
 

Scientific Instruments

  • • Vacuum system components
  • • Mass spectrometer parts
  • • Electron microscope components
  • • Analytical instrument sealing
  • • Laboratory equipment
 

Telecommunications

  • • Microwave components
  • • Antenna feedthroughs
  • • RF connector housings
  • • Fiber optic packages
  • • Communication satellite parts

Manufacturing Process & Quality Assurance

Comprehensive manufacturing process ensuring consistent quality and precision for every Kovar component.

Manufacturing Process

1

Material Selection & Inspection

High-purity Kovar alloy sourcing with material certification and chemical composition verification.

2

Precision CNC Machining

Advanced CNC operations using specialized tooling optimized for Kovar’s unique properties.

3

Heat Treatment (Optional)

Stress relief annealing to optimize mechanical properties and dimensional stability.

4

Surface Finishing

Precision grinding, polishing, and surface treatments to achieve specified requirements.

5

Quality Inspection

Comprehensive dimensional and functional testing before shipment.

Quality Control Standards

Testing & Inspection

  • • Coordinate measuring machine (CMM) inspection
  • • Surface roughness measurement
  • • Thermal expansion coefficient testing
  • • Leak testing for hermetic seals
  • • Material composition verification
  • • Dimensional tolerance verification

Certifications & Standards

  • • ISO 9001:2015 Quality Management
  • • ASTM F15 Material Specification
  • • RoHS and REACH compliance
  • • Material traceability documentation
  • • Certificate of conformance
  • • Statistical process control (SPC)

About Richconn – Your Trusted Kovar Manufacturing Partner

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.

15+ Years

Manufacturing Experience

5000+ Projects

Successfully Completed

50+ Countries

Worldwide Customers

ISO 9001

Quality Certified

Richconn CNC Machining Factory

Why Choose Richconn for Custom Kovar Parts?

Advanced manufacturing capabilities, strict quality control, and expert engineering support for your Kovar machining projects.

 

Advanced Equipment

State-of-the-art CNC machines and specialized tooling for precision Kovar machining with tight tolerances.

 

Expert Team

Skilled engineers and machinists with extensive experience in Kovar alloy properties and applications.

 

Fast Turnaround

Efficient production processes and project management ensuring on-time delivery for your critical projects.

 

Quality Assurance

Comprehensive quality control system with ISO 9001 certification and rigorous testing protocols.

 

Customer Support

Dedicated project managers and technical support throughout the entire manufacturing process.

 

Competitive Pricing

Cost-effective solutions without compromising quality, backed by transparent pricing and no hidden fees.

Frequently Asked Questions

Common questions about Kovar parts manufacturing and our services.

What is Kovar and why is it used?

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.

What tolerances can you achieve?

We can achieve tight tolerances up to ±0.0005″ (±0.013mm) for critical dimensions, depending on part geometry and specifications.

What is the typical lead time?

Lead times vary from 5-22 days depending on part complexity, quantity, and current production schedule. Rush orders can be accommodated.

Can you handle prototypes and production?

Yes, we support both prototyping and full-scale production, from single parts to thousands of pieces with consistent quality.

What quality certifications do you have?

We are ISO 9001:2015 certified and follow ASTM F15 standards for Kovar materials, with complete traceability documentation.

Do you provide surface treatments?

Yes, we offer various surface treatments including electroplating, passivation, and specialized coatings to meet your specific requirements.

Get Your Custom Kovar Parts Quote Today

Ready to start your precision Kovar machining project? Contact our experts for a free consultation and competitive quote.

Contact Information

 
Phone
+86-0755-28025755
 
Address
Intersection of Longhua Meilong Road and Donghuanyi Road, Songhe Community, Longhua Street, Longhua District, Shenzhen, GuangDong, China

Why Choose Richconn?

  • • ISO 9001:2015 Quality Management
  • • Advanced CNC Equipment & Technology
  • • Expert Kovar Machining Specialists
  • • Competitive Pricing & Fast Delivery
  • • Comprehensive Quality Control

Request a Quote

Request a quote Now!

*If you have any design files that need to be sent, please email them to sales@richconn.com.cn