Boron Nitride Blank

Dimensions: Max: 12" dia. x 16" H

SKU: HBN-B

Boron Nitride Blank, HBN Ceramic Blanks

Boron nitride blanks are usually the raw materials for other machined parts. BN blanks are made of 99% high-purity boron nitride ceramic and boron nitride composite materials (such as BN-ZS, BN-SiC, BN-AlN, BN-Si3N4, etc.). It can also be directly used as an insulator for some electronic or vacuum equipment through simple processing. We provide high-quality BN blanks to customers at competitive prices.

High-purity boron nitride ceramics can reach a maximum operating temperature of 2100 degrees Celsius under the protection of inert gas. Boron nitride composite ceramics combine the excellent properties of boron nitride and other ceramics. For example, the thermal conductivity of BN-AlN composite ceramics can reach 80W/mk.

Boron Nitride Blank 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

Boron Nitride Blank Advantages

-Easy to machine

-Excellent high-temperature resistance

-Low thermal expansion, excellent thermal shock resistance

-Excellent electrical insulation even at high temperatures

-Non-wetting with molten metals, slag and glass

-Corrosion resistance

Boron Nitride Blank Application

The low hardness and easy processing characteristics make it easier for boron nitride blanks to be processed into the required shape and size according to needs; secondly, it has a high-cost performance and is suitable for making high-temperature parts, such as high-temperature furnace insulation materials, thermocouple protection tubes, molten metal crucibles or molds, amorphous ribbon nozzles, and powder metal atomization nozzles.

Packing

As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Hot-Pressed Boron Nitride Blank is carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used for BN products, vacuum packing is also engaged for some of the parts.