High Purity Hot Pressed Boron Nitride Ceramics for Extreme Thermal & Electrical Applications | Wintrustek

Hot Pressed Boron Nitride (HPBN) ceramic is a high-temperature ceramic that has a structure similar to graphite. Our portfolio of hot-pressed solid materials includes pure Hexagonal Boron Nitride as well as composites.

Our Hot Pressed Boron Nitride ceramic products are manufactured with high-purity hexagonal boron nitride powders under high temperature and high pressure, ensuring dense microstructure, excellent machinability, and reliable performance in demanding applications. 

Easy machinability and fast availability make Boron Nitride an outstanding choice for prototypes to large quantities requiring its unique properties. HPBN ceramics can be custom-machined into crucibles, nozzles, insulators, setters, plates, rings, tubes, and precision structural components according to customer drawings or technical requirements.

Typical Grades

Pure BN 99.3%

Pure BN 99.7%

Composite BN+Al2O3

Composite BN+ZrO2

Composite BN+SiC

Composite BN+AlN

Composite BN+Si3N4

Composite BN+TiB2

Typical Properties

Low density

Low thermal expansion

Good thermal shock resistance

Low dielectric constant and loss tangent

Excellent machinability

Chemically inert

Corrosion resistant

Non-wetting by most molten metals

Extremely high working temperature

Typical Applications

High-temperature furnace setter plates

Molten glass and metal crucibles

High-temperature and high-voltage electrical insulators

Fittings and the lining of the plasma chamber

Nonferrous metal and alloy nozzles

Thermocouple protection tubes and sheath

Boron doping wafers in silicon semiconductor processing

Sputtering targets

Break rings for horizontal casters

Evaporation boats

Why Choose Wintrustek HPBN Ceramic Products

High material purity and consistency

Precision dimensional control

Fast custom machining response

Reliable export quality

Technical engineering support

Long-term industrial application performance