CG MATERIAL
Boron Nitride Ring, BN Ring
Boron Nitride Ring, BN Ring
Boron nitride ring, also known as BN ring, is a high-temperature ceramic ring made from boron nitride material. Boron nitride has excellent thermal and chemical stability, as well as high electrical insulation properties. BN rings are commonly used in high-temperature applications such as furnace fixtures, heat exchangers, and semiconductor processing.
BN rings are characterized by their high purity, low thermal expansion coefficient, and excellent thermal shock resistance. They have a wide operating temperature range, from room temperature to over 2000°C in air, and can also be used in vacuum and inert gas environments. BN rings are highly resistant to chemical attack, making them suitable for use in harsh chemical environments.
BN rings are available in various sizes and shapes, including round, rectangular, and custom shapes. They are often used as seals or spacers in high-temperature applications due to their excellent thermal and chemical stability. Additionally, BN rings are easy to machine and can be made into complex shapes for specific applications.
Boron Nitride Ceramics Specification
CG Material production formulations are developed to address the varied application problems in which ceramic components are commonly used. Many industrial applications push the envelope on specific requirements leading to the development of new formulations to successfully address them.
| Item No. | Description | Purity | Lot Size |
| CG-NI05-98 | Boron Nitride Powder Particle Size: 3 µm, 200 mesh or 325mesh |
BN > 98 %， B2O3 < 0.6%, Ca < 0.015%, Si < 0.12% |
100 kg 1000kg Customize |
| CG-NI05-99 | Boron Nitride Powder Particle Size: 3 µm, 200 mesh or 325mesh |
BN > 99 %， B2O3 < 0.4%, Ca < 0.01%, Si < 0.10% |
100 kg 1000kg Customize |
Comparison of Boron Nitride Ceramics
| Grade | BN-BO | BN-SZ | BN-AlN |
| Compositions | BN>98% | BN+SiC+ZrO2 | BN+AIN |
| Binder | B2O3 | / | AlBO3 |
| Density | 2.1-2.2 g/cm3 | 2.3-3.0 g/cm3 | 2.5-2.6 g/cm3 |
| 25°C Volume Resistivity | >1013 Ω·cm | >1012 Ω·cm | >1014 Ω·cm |
| Max. Service Temp. (°C) Oxygen; Inert Gas; High Vacuum |
900 2000 1800 |
900 1700 1700 |
900 2100 1900 |
| Flexural Strength | 75 Mpa | 100 Mpa | 130 Mpa |
| Compressive Strength | 100 Mpa | 300 Mpa | 250 Mpa |
| Coefficient of Thermal Expansion 25-1000°C |
2.0 x 10–6/K | 4.0 x 10–6/K | 4.5 x 10–6/K |
| Thermal Conductivity | 30 W/mK | 40 W/mK | 60 W/mK |
Boron Nitride Ring Advantages
– Low wetability to molten metal
– Relatively high thermal conductivity with low thermal expansion
– Relatively high thermal shock resistance
– Extremely high working temperature with proper inert gas protection (>3000C has been recorded).
Boron Nitride Ring Applications
Boron Nitride ceramics from CG Material can withstand high temperature in a high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Thus, Boron Nitride ceramic product is an ideal choice in a wide range of industries, such as:
– Used in nozzles for nonferrous metals metallurgy industry
– Used in insulators for high temperature furnace
– Used as break rings for horizontal casting machine
– Used to feed through for high voltage equipment
– Used in Boron Nitride parts for ion injection equipment
Boron Nitride Ring Available Materials
| Material | Description | Availability |
| BN99 | Hot pressed at high temperature (1900℃). Excellent corrosion resistance and thermal conductivity. Limited wear resistance Self-bonded and high purity(>99%) |
Machinable Blanks Finished Parts |
| BNBO | General purpose material Bonded by boric oxide |
Finished Parts |
| BNCB | Calcium borate bonded boron nitride Enhanced moisture resistance |
Finished Parts |
| BN60 | BN 60%, SiO2 40% | Finished Parts |
| BN40 | BN 40%, SiO2 60% | Finished Parts |
| ZSBN | BN-45%, Zr2O3 45% | Finished Parts |
Packaging
We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.
