About Us

KELTRYN is a precision CNC machining partner focused on Kovar and Fe-Ni-Co alloy components for hermetic, high-reliability, and demanding engineering applications. We help engineering and sourcing teams turn designs into production-ready parts — from prototype to low-volume production.

Precision Kovar Machining Built for Critical Applications

Kovar machining requires meticulous control of heat generation, work hardening, burr formation, thin-wall deformation, and critical sealing features. KELTRYN is purpose-built around these challenges. We manufacture custom Kovar parts including housings, lids, caps, sealing rings, flanges, frames, and complex precision components.

Our services span CNC turning, CNC milling, multi-axis machining, prototype development, low-volume production, deburring, finishing, and inspection support. Every project receives practical design-for-manufacturability feedback, material traceability, and complete dimensional documentation.

We serve companies that value engineering support, consistency, and dependable communication over the lowest unit price — from early-stage prototypes through repeat production batches.

Our Capabilities in Kovar & Fe-Ni-Co Alloys

Heat & Work Hardening Control

Proprietary tool paths and coolant strategies prevent overheating and work hardening in Kovar, maintaining material integrity and machinability.

Burr & Deformation Control

Specialized deburring and thin-wall fixturing minimize burrs and prevent deformation of delicate sealing surfaces and thin-walled features.

Traceability & Documentation

Full material traceability from mill to finished part with inspection reports, dimensional documentation, and certification for each batch.

DFM Feedback & Engineering Support

Early design-for-manufacturability feedback from experienced machinists helps optimize part geometry for cost, lead time, and reliability.

Prototype-to-Low Volume

Seamless transition from rapid prototypes through low-volume production runs with consistent quality and repeatable process control.

English Engineering Support

Clear English communication for international customers, with responsive engineering support tailored to time zones and project complexity.

Who We Serve

Our ideal customers are engineering teams and sourcing organizations that require precision-machined Kovar or Fe-Ni-Co alloy components for demanding applications. They value technical expertise, material assurance, and reliable delivery over the lowest unit price.

Typical industries include hermetic electronic packaging, semiconductor and optoelectronic equipment, laser systems, aerospace and defense electronics, medical devices, vacuum systems, scientific instruments, and RF/power electronics.

We work with design engineers, packaging engineers, sourcing managers, and operations directors who need tight-tolerance Kovar housings, lids, flanges, frames, and sealing components — from a single prototype to repeatable low-volume production.

Typical Buyer Roles

Mechanical Design Engineer
Manufacturing / Process Engineer
Packaging Engineer
Product Development Manager
Strategic Sourcing / Commodity Buyer
Supply Chain Manager
Quality Engineer
Founder / Operations Director (specialized hardware)

Frequently Asked Questions

What makes Kovar machining different from other metal machining?

Kovar (ASTM F15, Fe-Ni-Co alloy) has a low coefficient of thermal expansion that matches borosilicate glass and ceramics, making it ideal for hermetic seals. However, it work-hardens quickly, generates excessive heat during cutting, and is prone to burrs and deformation in thin-wall sections. Specialized tooling, coolant strategies, and machining parameters are required — expertise that KELTRYN has developed over years of focused practice.

Do you provide material traceability and inspection reports?

Yes. All Kovar material is sourced with original mill certifications. We maintain full lot traceability and provide dimensional inspection reports, material certifications, and process documentation with every shipment upon request.

What part sizes and complexities can you handle?

We support a wide range from small features under 0.5mm to parts up to 300mm in longest dimension. Complex geometries with tight tolerances ±0.005mm on critical features are routine. Multi-axis machining enables complex housings, flanges, and frames with minimal setups.

Can you help with design for manufacturability (DFM) before production?

Absolutely. We review your 3D models and 2D prints before quoting and provide practical DFM feedback to improve manufacturability, reduce cost, and enhance sealing functionality — all at no extra charge during the quoting process.

What is your typical lead time for prototypes and production?

Prototype parts are typically 2-4 weeks depending on complexity. Production lead times are quoted per project. We offer expedited options for urgent needs. Contact us with your specific requirements for a timeline.

Ready to Start Your Kovar Project?

From prototypes to low-volume production — get expert DFM feedback, material traceability, and reliable delivery.

Request a Quote

RFQ Support

Send Your Kovar Machining RFQ

Share drawings, CAD files, material requirements, quantities, tolerances, finishing needs, inspection requirements, and your target timeline. Our team will review the details and respond by email.

Helpful RFQ details

2D drawings or 3D CAD files
Material: Kovar / ASTM F15 / Fe-Ni-Co alloy
Quantity, tolerance, finish, inspection needs
Application and purchasing timeline

Direct email: info@kovarmachining.com