Micron CBN Powder

Engineered Micron CBN Powder for Extended Tool Life and Process Control

Enhanced Thermal Stability and Surface Finish

Micron CBN (Cubic Boron Nitride) Powder is engineered for precision grinding applications requiring superior thermal resistance, excellent surface finish, and high material removal rates. Crownkyn’s micronised CBN is characterised by its sharp crystal structure, controlled particle size distribution, and excellent purity—ensuring consistent performance in resin, metal, and vitrified bond systems.

Produced under stringent quality control, our Micron CBN Powder offers exceptional grain strength, making it ideal for grinding ferrous alloys, hardened steels, and other temperature-sensitive materials. It enables your tools to achieve both longer service life and higher grinding efficiency in demanding manufacturing environments.

We also offer custom solutions for surface treatments or coatings to match your specific bonding systems or application needs.

CBN-B15M

Characteristic: Black, high purity, excellent thermal stability, and high grinding efficiency, designed for grinding and polishing ferrous metals.

Application： Suitable for manufacturing resin bond tools and honing stones..

CBN-A80M

Characteristic:Black brown, high strength, high toughness, excellent thermal stability, high surface cleanliness, and strong grinding force.

Application： Used for vitrified and metal bond tools, and also suitable for producing PCBN and CBN polycrystalline compacts.

CBN-A95M

Characteristic: Amber colour, high purity, excellent wear resistance, and superior thermal stability.

Application：Ideal for PCBN composites and polycrystalline compacts where extended tool life is required.

Reliable Micron CBN Powder for Precision Machining

At Crownkyn, we provide micron CBN powder designed for precision grinding, honing, and polishing of ferrous materials. With excellent thermal stability, high hardness, and wear resistance, it ensures fine surface finish, tight tolerances, and longer tool life in resin and vitrified bonds.

Tailor Micron CBN Powder Solutions

Precise Size Range: Offered from sub-micron to 40 μm, ideal for fine grinding, honing, and polishing of ferrous materials with high accuracy.
High Thermal and Chemical Stability: Excellent resistance to heat and oxidation ensures stable performance in demanding machining processes and extends tool life.
Optimised for Bond Systems: Compatible with resin, vitrified, and metal bonds, providing strong adhesion and consistent cutting efficiency in various applications.
Strict Quality Assurance: Controlled particle size, shape, and purity ensure reliable performance and uniformity across batches.
Outstanding Toughness and Wear Resistance: High hardness with balanced toughness delivers efficient material removal and long-lasting tool performance.

Discover Crownkyn’s reliable micron CBN powder solutions. Collaborate with our technical team to choose the optimal grit size, shape, and grade to suit your bond system and achieve precise, efficient machining of ferrous materials.

Why Choose Micron CBN Powder from Crownkyn

At Crownkyn, we understand that precision machining requires the right CBN solution. Our micron CBN powder is developed with controlled size, shape, and purity to meet the demands of your bond system and application. Count on us for stable quality, technical support, and reliable performance in grinding and finishing ferrous materials.

Direct-from-Factory Efficiency

With our own manufacturing facility, we deliver micron CBN powder quickly and efficiently, offering expert technical support and responding to your needs within 24 hours.

Transparent & Competitive Pricing

We control every stage — from raw material selection to final quality checks — guaranteeing uniform particle size, purity, and performance to support your production with confidence.

Consistent Quality and Reliability

We oversee every step of our manufacturing process, from raw diamond selection to final inspection, ensuring consistent coating quality and dependable performance for your tools.

Frequently Asked Question

Can you provide free samples for quality testing?

Free samples of synthetic diamond powder or CBN powder about 50cts can be provided for quality test. Sample preparation typically takes 3–5 working days, and international delivery is about 7 days by air.

Can you provide test reports of products？

we can provide analysis reports upon request. These may include particle size distribution（PSD）, crystal morphology, purity, magnetic content, and thermal stability, especially important for high-performance products.

What is MOQ of the product? Are there any volume discounts?

Pricing depends on product type (diamond or CBN), grit size, and application. MOQ usually starts from 1kg (5000ct). Volume discounts are available for bulk orders or long-term partnerships.

What is the typical delivery time? Is there any emergency production capacity to cope with sudden demand?

Standard delivery time is 7–15 working days after confirming the order. We maintain stock for regular grades and can prioritize production to support urgent requirements when needed.

Is the packaging moisture- and shock-proof?

All products are packed in sealed, anti-static, moisture-proof PE bags, or PE bottles and sealed in shock-proof cartons. And all packaging complies with international transport regulations.

Do you support customised production？

Absolutely. We support customized coatings (e.g., Ti, Ni, Cu) and tailor-made diamond powder and CBN powder to match different bonding systems and tool applications.

Can the supplier provide complete customs clearance documents？

We provide a full set of export documents including Certificate of Origin, MSDS, Packing List, and Commercial Invoice. Specific documents can be arranged based on your destination country’s requirements.

What are the transport options (air, sea, rail)?

We commonly offer air freight. Logistics can be handled by our team or your nominated forwarder, depending on your preference.

Is the supplier's production capacity stable and can it meet our order requirements in the long run?

Yes. Our production facilities ensure stable monthly output, supported by ISO-standardized quality control. We are able to meet ongoing demands and scale production for long-term cooperation.

If the product quality is not qualified, can it be returned or replaced?

In case of verified quality issues, we offer free replacement or return. All related costs including shipping are covered by us. We prioritize long-term trust and transparency with our clients.

Manufacturing Workshop

Micron CBN Powder
The Comprehensive Guide (2024)

This guide showcases the versatility of Crownkyn’s micron CBN powders for precision grinding, honing, and polishing of ferrous materials. Whether you require micron CBN for resin, vitrified, or metal bond tools, we offer the knowledge to help you select the right grade and size for your application. Crownkyn ensures consistent quality and reliable performance to support both your manufacturing and distribution needs.

Table of Contens

Purchasing Micron CBN Powder for Your Tools from China?

Read Seven Key Tips for Purchasing Cubic Boron Nitride Micropowder from China!

What is Micron CBN Powder?

Micron CBN powder is a high-performance abrasive material produced by carefully crushing and classifying single-crystal cubic boron nitride (CBN). Manufactured from synthetic CBN, it features fine, uniform particles with high hardness, excellent thermal stability, and controlled size distribution, typically ranging from sub-micron to about 40 μm. This tough, angular structure delivers superior wear resistance, strong cutting ability, and consistent surface finish when grinding ferrous materials.

At Crownkyn Diamond, we produce micron CBN powder under strict quality control to ensure uniform particle shape, narrow size distribution, and minimal impurities. Our products are widely used in resin, vitrified, and metal bond tools for precision grinding, honing, and polishing of hardened steels, cast iron, and other difficult-to-machine ferrous alloys.

Key Features and Benefits of Micron CBN Powder

Micron CBN powder offers excellent thermal stability, high hardness, and superior wear resistance for grinding ferrous materials. Its uniform particles ensure strong bond retention, precise cutting, and extended tool life, delivering reliable performance under high loads and temperatures.

High Hardness and Wear Resistance

Micron CBN powder features high hardness and excellent wear resistance, enabling efficient grinding of ferrous materials while maintaining long tool life.

Excellent Thermal Stability

With superior resistance to heat and oxidation, it performs reliably under high temperatures, ensuring stable grinding performance.

Strong Bond Retention

The uniform shape and toughness of the particles enhance retention in resin, vitrified, and metal bond tools, delivering consistent results.

Precise Particle Size and Shape

Tightly controlled grading ensures a narrow size distribution and consistent crystal shape, contributing to predictable grinding behaviour and batch-to-batch stability.

Optimised for Ferrous Materials

Ideal for grinding, honing, and polishing hardened steels, cast irons, and other ferrous alloys in a variety of high-precision applications.

Available Grades and Size Ranges

Micron CBN powder is offered in a range of grades, particle shapes, and precisely classified size ranges to meet diverse industrial needs. Choosing the appropriate grade and size ensures optimal bond compatibility, thermal stability, and efficient grinding or polishing performance on ferrous materials.

Ultra-Fine Sizes (0–1 μm): Engineered for precision finishing and superfinishing of hardened steels and superalloys in aerospace, automotive, and tool manufacturing.

Fine Sizes (1–10 μm): Suitable for lapping, honing, and fine grinding of high-speed steel, bearing steel, and tool steels, ensuring consistent surface quality.

Medium Sizes (10–40 μm): Ideal for general-purpose grinding, tool edge preparation, and surface treatment of ferrous materials where both efficiency and surface finish matter.

Coarse Sizes (40–60 μm): Designed for aggressive grinding and stock removal of hardened steels and cast irons in gear manufacturing, roll grinding, and heavy-duty processing.

Bond System Compatibility

Micron CBN powder is designed to perform optimally across resin, vitrified, and metal bond systems, offering excellent grit retention, thermal stability, and wear resistance in abrasive tools. Its controlled shape and toughness ensure strong bonding with different matrices, delivering reliable cutting efficiency and extended tool life in demanding ferrous material applications.

Resin Bond CBN Tools

A uniform, auto-Micron CBN’s sharp edges and toughness ensure excellent retention and cutting efficiency in resin bonds, making it ideal for precision grinding and finishing of hardened steels with fine surface quality.

Vitrified Bond CBN Tools

With high thermal stability and blocky, stable crystals, micron CBN performs reliably in vitrified bonds under high loads and temperatures, providing consistent grinding and long tool life.

Metal Bond CBN Tools

Micron CBN’s superior wear resistance and toughness allow strong mechanical retention in metal bonds, delivering durability and stable performance in heavy-duty and high-temperature grinding applications.

Typical Applications in Various Industries

Micron CBN powder is used across a range of industries, each requiring specific grades, particle sizes, and properties to meet demanding machining needs. Choosing the right grade ensures optimal wear resistance, thermal stability, and grinding efficiency for your tools. Typical applications include grinding and finishing hardened steels in automotive, aerospace, tooling, bearing, and heavy machinery sectors.

Automotive & Aerospace：Precision grinding of hardened steels, gears, bearings, and heat-resistant alloys for engines, transmissions, and structural components.
Tooling & Cutting Tools：Manufacturing and sharpening of high-speed steel and PCBN tools, ensuring fine edges and extended tool life in demanding applications.
Bearing & Machinery Components：Finishing of hardened races, rollers, and other precision components requiring tight tolerances and superior surface quality.
Heavy Industry & Metal Forming：Grinding and maintenance of rolls, dies, and punches used in metal forming and heavy machinery under high thermal and mechanical loads.
PCBN & Composite Materials：Production of PCBN compacts and polycrystalline structures for cutting and machining of ferrous alloys with exceptional wear resistance and stability.

With uniform particle shape, precise size control, and excellent compatibility with resin, vitrified, and metal bonds, Crownkyn’s micron CBN powder enables tool manufacturers to achieve consistent, high-performance grinding and finishing of ferrous materials across automotive, aerospace, tooling, and heavy machinery industries.

How to Select the Right CBN Micropowder

STEP 1

Match the Bond System

Select a CBN grade suited to your bond type: sharp and tough particles for resin bonds, blocky and stable crystals for vitrified bonds, and wear-resistant grains for metal bonds.

STEP 2

Consider the Material and Conditions

Evaluate the material being machined, such as hardened steel, cast iron or ferrous alloys, along with the operating temperature, load and speed to determine the appropriate CBN properties.

STEP 3

Choose the Right Grit Size

Fine grits are ideal for polishing and finishing, medium grits for general grinding, and coarse grits for rapid stock removal in heavy-duty applications.

STEP 4

Assess Particle Shape and Purity

Opt for standard micron CBN for general use, or select higher-purity, uniform-shaped grades for improved bond retention and consistent grinding performance.

STEP 5

Consult Technical Experts

Collaborate with Crownkyn’s experienced team to evaluate samples and optimise the CBN grade, grit size, and shape to achieve the best balance of efficiency, surface quality, and cost-effectiveness for your application.

Quality Control and Consistency

At Crownkyn, we prioritise consistency and quality across every batch of micron CBN powder to ensure reliable performance in your grinding and finishing processes.

Precise Size and Shape Control: Each batch is graded using laser particle size analysers and precision classification techniques to ensure uniform particle size distribution and controlled crystal morphology, delivering consistent grinding and finishing results.

High Purity Assurance: Advanced ICP and XRF testing are conducted to monitor and minimise metallic and non-metallic impurities, safeguarding tool performance in high-temperature and demanding environments.

Stable Crystal Structure: Careful synthesis and processing maintain the CBN’s crystal integrity, ensuring excellent thermal stability, toughness, and cutting efficiency in your application.

Consistent Batch Performance: All lots undergo magnetic separation, visual inspection, and sample testing to guarantee stable particle quality, predictable behaviour, and reliable supply for your production needs.

Sample Testing and Performance Verification

At Crownkyn, we know the performance of your grinding tools and precision processes depends on selecting the right micron CBN powder for your application. Please follow these sample testing and performance verification steps to ensure optimal results before full-scale production.

Custom Sample Preparation

We provide customised sample quantities in your requested micron sizes and grades to suit your bond system and specific application requirements.

Application-Based Testing

Test our micron CBN powder directly in your processes or via independent laboratories to evaluate cutting efficiency, surface finish, and thermal stability under actual working conditions.

Technical Support Service

Our technical team works with you to interpret test data, recommend adjustments, and fine-tune product specifications to maximise performance in your tools.

Performance Feedback Loop

Your feedback helps us continuously improve particle shape, size consistency, and grade selection, ensuring reliable performance, longer tool life, and stable results batch after batch.

Packaging, Handling, and Storage Guidelines

At Crownkyn, we understand that the quality of micron CBN powder must be preserved from the moment it leaves our facility to the point of application. Proper packaging, handling, and storage are essential to maintain its purity, consistency, and performance. Please follow the guidelines below to ensure optimal results.

Packaging

Moisture-proof and anti-static containers
Sealed plastic bottles or vacuum-sealed foil bags
Outer cartons for bulk protection
Custom packaging available on request

Handling

Wear gloves and masks to avoid inhalation and skin contact
Use clean, dry tools when opening or transferring
Handle in a clean, controlled environment

Storage

Keep sealed in original packaging until use
Store in a cool, dry, and well-ventilated place
Avoid moisture, sunlight, and extreme temperatures

Hey, I’m Ashley Wei, the sales engineer of crownkundiamond.com Family-run business.
An expert of Synthetic Diamond Powder specialist.
In the past 26 years, we’ve supported 120+ clients across 35 countries, including diamond tools manufacturers and synthetic diamond powder distributors to significantly enhance their product quality and efficiency.
The purpose of article is to share insights on advanced abrasive solutions, helping you produce higher quality diamond tools with improved performance and durability.