Solid Boron Nitride

Solid Boron Nitride - Grade A

Requires a Java Enabled Browser.

Come and meet

Precision Ceramics

on our stand at

CERAMITEC 2009

New Munich Trade Fair Centre

20th to 23rd October 2009

MACOR^®

Machinable Glass Ceramic

Machinable with ordinary metalworking tools & combining the performance of a technical ceramic with the versatility of a high performance plastic.

A completely unique material, Solid Boron Nitride solves problems that could not possibly be tackled with other compositions such as Al₂O₃ or SiC.

Solid Boron Nitride fights off temperatures over 2,000°C and, depending on the grade, carries a dielectric strength of nearly 1000 volts/mil. Hot pressed in billet form, Solid Boron Nitride can easily be machined into rods, bars, plates and even custom shapes.

The highly exceptional characteristics of Solid Boron Nitride make it ideal for fixture or jig materials for sealing or brazing operations in induction, vacuum and atmosphere furnaces; for molten metal crucibles; heat sinks and high temperature insulators.

Solid Boron Nitride - Grade A

An excellent choice for all but the most severe refractory applications, Solid Boron Nitride Grade A is a high performance material possessing a glassy B₂O₃ binder that creates a hard and dense yet fully machinable product.

Applications

High temperature electrical insulators and vacuum furnace supports which require electrical resistivity, high temperature strength, thermal shock resistance and low chemical reactivity
Crucibles and containers for high purity molten metals
Insulators and source fixtures for ion implantation systems which require high temperature purity and electrical insulation
Radar components and antenna windows which require exacting electrical and thermal properties
Setterplates for the processing of other advanced materials which require stable, inert surfaces
Nozzles for powdered metal spraying

Typical Properties

Binder	Boric Acid
Binder Melting Point	550°C
Maximum Use Temperature:
Oxidizing vs. Inert	850°C (1800°C)
Specific Heat @ 700° C (J/g°C): Dieletric Strength (V/mil): Hardness-Knoop (kg/mm²)	1.610 2400 15.51 - 24.19
Pressing Direction:	Para (Perp)
Resistivity Ohm-cm RT: Loss Tangent @ 8.8 GHz: Dieletric Contant @ RT	>10¹⁴(>10¹⁵) .0017 (.0005) 4.58 (4.15)
Thermal Conductivity
(W/m/K) @ 25° C:	30.13 (33.71)
Thermal Expansion Coefficient
(RT to 1500°C) (in/in/°C x 10^-6)	11.85 (3.12)
Flexural Strength (psi)*
@ 25°C: @ 1500°C:	11000 (16400) 900 (1380)
Compressive Strength
@ 25°C:	20780 (27060)
Density (g/cc minimum) % Open Porosity Oxygen - max.: B2O3 - max.: Calcium - max.: Other Impurities - max.:	2.00 2.84% 4.0% 4.5% 0.1% 0.2%

*Based on 4-pt bend test-Sample size = 51mm x 4mm x 3mm

Solid Boron Nitride - Grade A

Solid Boron Nitride - Grade AX05

Solid Boron Nitride - Grade HP

Solid Boron Nitride - Grades M & M26

Solid Boron Nitride - Grade ZSBN

Boron Nitride Coatings

Boron Nitride Industrial Powders

Boron Nitride Aerosol Sprays