CVD Diamond Coated Endmills & Drills
Upgrade your machining operations with our advanced diamond-coated carbide tools. Through chemical vapor deposition (CVD) process, we meticulously grow a durable coating onto carbide tools, resulting in exceptional wear resistance and extended tool life compared to traditional options. Manufactured in-house to meet your unique specifications, our tools are tailored to fit your exact needs. Experience enhanced performance and productivity in your workshop with our precision-engineered solutions designed to keep you ahead of the curve.
True Diamond Coating
- True Diamond Coating with a Crystalline Structure
- Best tool life and performance
- Applied to special, in house, carbide grades
- No minimum quantities on orders
- Applications: Composites, Carbon, Graphite, Green Carbide, Green Ceramics
Diamond Like Coating (DLC)
- Diamond Like Carbon Coating, Non-Crystalline
- Can be applied to most carbide grades
- Economically priced coating option
- Minimum quantities on all orders
- Applications: Non Ferrous Materials, Abrasive Plastics, Carbon Fiber, Composites, Aluminum, Copper, Brass, Bronze, Carbon
| Coating Grade | Thickness | Microhardness | Tool Life Improvement |
|---|---|---|---|
| ND15 | 12-15 Microns | 10,000 | 20x-50x |
| ND10 | 8-10 Microns | 10,000 | 20x-30x |
| ND5 (DLC) | 1-3 Microns | 5,000-8,000 | 6x-8x |
What Is CVD Diamond Coating?
CVD diamond coating is created through a vapor deposition process in which carbon atoms are chemically bonded onto a substrate, forming a continuous layer of synthetic diamond. Unlike traditional diamond grit coatings, which use bonded particles, CVD produces a true diamond film with a uniform surface. The result is a coating that combines extreme hardness with exceptional smoothness—perfect for cutting, milling, and drilling abrasive materials.
This technology enables manufacturers to extend tool life dramatically while achieving consistent, high-quality finishes. Because the coating is pure diamond, it maintains its cutting edge even under intense heat and pressure.
Benefits of CVD Diamond Coating
CVD diamond coatings are engineered for performance, offering a wide range of benefits across industries:
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Exceptional Hardness: Diamond is the hardest known material, offering superior wear resistance compared to carbide or PVD coatings.
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Extended Tool Life: Tools can last up to 10–20 times longer when cutting abrasive or composite materials.
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Improved Surface Finish: The smooth diamond layer minimizes friction and material buildup, producing cleaner cuts and tighter tolerances.
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Reduced Heat Generation: The high thermal conductivity of diamond dissipates heat efficiently, preventing edge breakdown.
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Chemical Stability: CVD diamond resists chemical attack, making it ideal for non-ferrous and composite materials.
Applications of CVD Diamond Coating
CVD diamond coatings are particularly well-suited for machining non-ferrous materials and abrasive composites where conventional tooling quickly wears out. Common applications include:
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Aluminum Alloys (especially Si-rich grades)
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Graphite Electrodes
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Carbon Fiber Reinforced Plastics (CFRP)
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Fiberglass and Composites
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Ceramics and Carbides
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Copper, Brass, and Bronze Components
In these environments, CVD coatings help maintain edge sharpness and reduce downtime caused by frequent tool changes.
NDTC CVD Diamond Coating Capabilities
At National Diamond Tool & Coating, we provide high-quality CVD diamond coatings for a variety of precision cutting tools, including:
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End Mills
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Drills
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Reamers
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Inserts
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Custom-engineered tooling
Our coatings are applied to achieve the perfect balance of hardness, adhesion, and edge sharpness. Whether you need maximum tool life for carbon fiber machining or smoother cutting in high-silicon aluminum, NDTC delivers coatings engineered to your exact specifications.
Why Choose NDTC for CVD Diamond Coating?
With over 25 years of experience in advanced diamond tooling, NDTC has built a reputation for quality, precision, and reliability. Our coatings are applied using state-of-the-art equipment and verified through meticulous inspection to ensure consistency across every batch.
We’re a family-owned manufacturer based in Westlake, Ohio, using U.S.-sourced materials and in-house expertise to deliver coatings that outperform and outlast the competition.