MACOR® CNC Machining Services

Precision MACOR® CNC machining services for semiconductor, photonics, vacuum, aerospace, research, and industrial applications. We manufacture custom MACOR® ceramic parts with complex geometries, fine features, and tight tolerances for prototype and low-volume production.

Material Properties & Advantages

What is MACOR®?

MACOR® is a machinable glass ceramic composed primarily of fluorophlogopite mica dispersed within a glass matrix. Unlike conventional technical ceramics, it can be precision machined using standard carbide tools without requiring diamond grinding or post-sintering. This unique combination of machinability, dimensional stability, and reliable electrical and thermal performance makes MACOR® an excellent choice for prototype and low-volume precision ceramic components.

Key Advantages of MACOR®:

Machinable Glass Ceramic
– Machined with standard carbide tools without diamond grinding.

Electrical Insulation
– Excellent dielectric properties for electrical and electronic applications.

High-Temperature Stability
– Maintains stable performance at temperatures up to 800°C continuously.

Vacuum Compatibility
– Low outgassing makes it suitable for vacuum and semiconductor environments.

Low Thermal Conductivity
– Helps minimize heat transfer in thermally sensitive applications.

MACOR® Specifications & Datasheets

We provide precision CNC machining for MACOR® and equivalent machinable glass ceramic materials.

MACOR®

Hardness

Density

Thermal Conductivity

Electrical Resistivity

~250 HV (Vickers Hardness)

~2.52 g/cm³

~1.46 W/m·K

>10¹⁴ Ω·cm

Wear Resistance

Chemical Resistance

Flexural Strength

Compressive Strength

Moderate

Good

~94 MPa

345 MPa

MACOR® & Equivalent Material Options

Need MACOR®, machinable glass ceramic, or an equivalent material for your application? We provide CNC machining using customer-specified materials and qualified equivalent grades.

Trusted by Leading Technology Companies Worldwide

Machining Capabilities for MACOR®

Challenges & Solutions
MACOR is softer and easier to machine than traditional ceramics but requires careful handling to avoid micro-cracking or edge chipping. We provide:

CNC Milling & Turning – With standard carbide tooling for fast delivery

Threading, Tapping, Drilling – Internal features and fine details achievable

No Post-Sintering Needed – Machined components are use-ready off the mill

Surface Finishing – Available for tighter tolerances and smoother surfaces

Tolerances Achievable for Machined MACOR®

Milling & Turning: ±0.01 mm

Surface Finishing: Ra ~0.4 µm typical, Ra < 0.2 µm with polishing

Applications of MACOR®

MACOR is trusted in prototyping and specialized production where rapid ceramic machining and thermal/electrical performance are required.
Industries Served:

Semiconductors – Isolators, mounts, test fixtures

Aerospace & Defense – Thermal shields, brackets, alignment jigs

Medical & Laboratory – High-temp fixtures, sample holders, RF shielding

Scientific Equipment – Vacuum-compatible components, standoffs

Electronics – Custom insulators, enclosures, sockets

Surface Finishing Options for MACOR®

To meet strict industry standards, we offer advanced surface treatments for MACOR® parts:

Sanding & Polishing

Smooth surfaces for insulation or mounting.

Laser Marking

Permanent, non-invasive part ID.

Chamfering & Edge Relief

Prevents flaking and improves handling.

Efficiency

Moving Fast, Guaranteed.

We prioritize operational efficiency to reduce costs and expedite delivery.

Average response time within 2 hours
Global delivery in a matter of days
97.4% of parts shipped on time

Wide-Ranging Experience

Crafting Excellence Through Diverse Expertise

Our collaboration with diverse partners, each with unique machinery and expertise, enables us to overcome complex manufacturing challenges.

Over 2000 projects delivered
Expertise in multiple manufacturing processes
Expert DFM feedback

Massive Capacity

Ready to Meet Your Demands

Backed by 100+ carefully vetted, closely partnered experts, we fulfill your on-demand manufacturing needs at scale.

65+ CNC Manufacturing Partners
15+ Additive Manufacturing Partners
20+ Surface Finishing Partners

Quality Assurance

Ensuring Perfection, Delivering Excellence

Every part we ship is meticulously inspected in our in-house lab to ensure it meets consistent design and quality standards.

ISO 9001:2015 Certified
State-of-the-art QC Equipment
In-depth Inspection Reports Available

Additional Ceramics We Support

In addition to MACOR®, we offer precision CNC machining services for other hard technical ceramics:

Alumina (Al₂O₃)

Alumina (Al₂O₃) is a durable ceramic used for high-strength, high-temperature parts in precision industries.

Zirconia (ZrO₂)

High fracture toughness and wear resistance.

Boron Nitride (BN)

Excellent thermal conductivity and electrical insulation.

Quartz & Glass Ceramics

Used for optical and semiconductor applications.

Silicon (Si)

Essential for semiconductor wafer processing.

Looking for more ceramic machining options? Check out our Alumina (Al₂O₃) CNC Machining services.

Request a Quote for MACOR® CNC Machining Today

Looking for high-precision MACOR® machining? InstaVoxel delivers expert CNC machining, fast lead times, and superior quality. Contact us today to discuss your project.