Boron Nitride Ring
Dimensions: Length: 10~400mm, ID: >0.8mm
High-Performance Boron Nitride Rings (BN Ceramic Rings) for Demanding Industrial Applications
Boron Nitride Rings (BN Ceramic Rings) – Superior Thermal & Chemical Resistance
Hot-pressed boron nitride (BN) ceramic is a highly versatile industrial material known for its exceptional thermal stability, electrical insulation, and resistance to molten metals. While not as hard as alumina or zirconia ceramics, its softness and machinability allow for precision machining into complex shapes. BN ceramic rings exhibit outstanding inertness, thermal shock resistance, and non-wettability against molten metals, making them ideal for metallurgical, semiconductor, and high-temperature electrical applications.
Boron Nitride Ring Basic Information & Materials
| Physical Property | |||||||
| Item | Units | BN99, >99.3% | BN997, >99.7% | BN+ZrO2 | BN+SiC | BN+AlN | BN+Si3N4 |
| Color | White | White | White Graphite | Greyish Green | White Graphite | Dark grey | |
| Density | g/cm3 | 2 | 1.6 | 2.25-2.35 | 2.4-2.5 | 2.8-2.9 | 2.2-2.85 |
| Mechanical properties | |||||||
| Mohs hardness | 2 | 2 | |||||
| Bending Strength | 115 | 85 | 120 | 150-320 | |||
| Compressive Strength | 225 | 130 | 220 | 380-480 | |||
| Flexural strength | Mpa | 35 | 20 | ||||
| Thermal properties | |||||||
| Maximum Use Temperature | in Air | 900℃ | 900℃ | 1000℃ | 1000℃ | 1000℃ | 1000℃ |
| in Insert | 2100℃ | 2100℃ | 1800℃ | 1800℃ | 1800℃ | 1800℃ | |
| In Vacuum | 1800℃ | 1800℃ | 1800℃ | 1800℃ | 1800℃ | 1800℃ | |
| Thermal Conductivity(20℃) | W/(m·K) | 40 | 50 | 20 | 30 | 80 | 40 |
| Thermal Expansion Coefficient(20℃-1000℃) | 10-6/K | 2 | -0.5 | 3.5 | 2.8 | 2.8 | 2.7 |
| Electrical properties | |||||||
| RT Resistivity | Ω.cm | >10^14 | >10^14 | >10^12 | >10^12 | >10^13 | >10^13 |
Advantages of Boron Nitride (BN) Rings
Edgetech Industries supplies premium-grade boron nitride ceramic rings engineered for extreme conditions, including high-vacuum environments, corrosive settings, and high-temperature processes.
✔ Exceptional Thermal Shock Resistance – Low thermal expansion ensures stability under rapid temperature changes.
✔ Superior Molten Metal Resistance – Non-reactive with most molten metals, reducing contamination.
✔ High-Temperature Stability – Can operate at extreme temperatures under inert gas protection.
✔ Excellent Electrical Insulation – Ideal for high-voltage and high-frequency applications.
✔ Easy Machinability – Can be precision-machined into custom geometries for specialized uses.
Typical Applications of Boron Nitride Rings
BN ceramic rings are widely used in industries requiring high thermal and chemical stability:
✔ Metal Casting & Foundry – Ensures uniform heat distribution, minimizing casting defects.
✔ Semiconductor Processing – Used as crucibles, insulators, and diffusion barriers.
✔ High-Temperature Furnace Components – Resists thermal shock in vacuum and inert gas environments.
✔ Electrical Insulation – Suitable for high-voltage applications due to dielectric properties.
✔ Plasma & Laser Equipment – Acts as a protective component in extreme conditions.
Secure Packaging for Boron Nitride Rings
Due to the fragile nature of ceramic materials, Edgetech Industries ensures careful handling and protective packaging to prevent damage during transit. Our BN rings are packed with:
✔ Shock-Absorbent Cushioning – Minimizes breakage risks.
✔ Reinforced Outer Boxes – Provides structural protection.
✔ Vacuum Sealing (Upon Request) – Ensures contamination-free delivery for sensitive components.
Choose Edgetech Industries for Premium Boron Nitride (BN) Rings – Engineered for Performance & Reliability!
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