Boron carbide ceramic, also known as black diamond, is widely used in military applications. Its lightweight nature makes it lighter than alumina and silicon carbide, while its excellent neutron absorption capability and high neutron cross-section make it a critical material for nuclear applications.
We specialize in precision machining of boron nitride (BN) components, delivering exceptional dimensional accuracy and ultra-smooth surface finishes. With our advanced multi-axis CNC equipment and years of expertise in technical ceramics, we produce parts that offer outstanding thermal stability, high electrical insulation, and excellent machinability — even under extreme conditions.Whether for semiconductor, vacuum, aerospace, or high-temperature industrial applications, our BN components ensure reliable performance and long service life.
The following table lists the key performance parameters of our Boron carbide ceramic material.This value is for reference only and may vary slightly depending on the batch conditions.
| Mechanical Properties | Unit | Boron Carbide |
|---|---|---|
| Density | g/cm³ | 2.5 |
| Hardness | kg/mm² | 3200 |
| Flexural Strength | MPa | 410 |
| Compressive Strength | MPa | 2500 |
| Elastic Modulus | GPa | 470 |
| Fracture Toughness | MPa·m¹⁄² | 2.5 |
| Poisson’s Ratio | – | 0.16 |
| Young’s Modulus | GPa | 460 |
| Thermal Properties | Unit | Boron Carbide |
|---|---|---|
| Thermal Conductivity | W/m·K | 42 |
| Melting Point | °C | 2450 |
| Specific Heat | J/g·K | 0.9 |
| Coefficient of Thermal Expansion | ×10⁻⁶/K | 4 |
| Electrical Properties | Unit | Boron Carbide |
|---|---|---|
| Dielectric Constant | 1 MHz | 7 |
| Dielectric Strength | V/cm | 1 × 10⁶ |
| Dielectric Loss | 1 MHz | 0.001 |
| Volume Resistivity | Ω·cm | 10⁴ |
Silicon carbide is a high-performance ceramic known for its exceptional hardness, wear resistance, and thermal conductivity. Compared with boron carbide, it offers better thermal stability and oxidation resistance, making it widely used in high-temperature components, semiconductor equipment parts, and wear-resistant mechanical components.
Defense, nuclear, wear-resistant, and high-temperature applications.
It enables complex geometries, faster processing, and lower cost before sintering.
Yes. We provide full custom manufacturing services, including:Machining based on 2D drawings or 3D CAD files，Design-for-manufacturing (DFM) optimization，Prototyping to volume production，Complex geometries (micro-holes, slots, precision surfaces)
We support industries such as semiconductor, defense, nuclear, and advanced research.
If your application requires lightweight design, corrosion resistance, and neutron absorption capabilities, boron carbide is the best choice.
We can machine Boron Carbide components with the following minimum feature sizes: 1.0 mm wall thickness, Ø1.0 mm holes, 2.0 mm slot width, and internal threads from M3.These capabilities are based on our standard precision machining processes and ensure stable quality and reliable production. For designs close to these limits or more complex geometries, we recommend sending your drawings for evaluation.
Macor is a machinable glass-ceramic made from fluorophlogopite mica crystals embedded in a borosilicate glass matrix. This composition gives it a rare
combination of metal-like machinability, excellent electrical insulation, low thermal conductivity, and stability up to 1000°C (no load) while maintaining very tight tolerances.
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