Machinable Ceramics

MACOR ™
High Temperature Machinable Glass/Ceramic

MACOR MACHINABLE GLASS/CERAMIC can be easily machined into complex forms without hard tooling or intricate filing proceedures. Macor instantly transforms a standard machine shop to an "in house" Ceramics Fabrication Facility. With features like 1100°C operating tempature and 0° porosity Macor can be used for the toughest of applications. Specify Macor for economic, design flexibility that you control.

FEATURES
Machinable to 2 micton surface Heat Insulation Thermally Shock Resistant Excellent Electrical Properties	Chemically Stable Dimensionally Stable High Vacuum Integrity Thick or Thin Film Metallized

SPECIFICATIONS
Density	gm/cc	2.52
Porosity	%	0
Knoop Hardness	NA	250
Maximum Use Temp. (no load)	°F	1832
Maximum Use Temp. (no load)	°C	1000
Coefficient of thermal expansion	In/in °F	52x10^-1
Coefficient of thermal expansion	In/in °C	94x10^-1
Compressive Strength	psi	50,000
Flexural Strength	psi	13,600
Dielectric Strength (A.C.)	Volts-mil	1,000
Volume resistivity	ohm-cm	>10¹⁴

APPLICATIONS

Macor is used in many areas including heat-solder fixtures, shields, supports, plasma; machinery-valves, nozzles, bearings, spacers; electrical - insulators, CRT's, spacers, substrates, chemical, instrumentation, vacuum and more.

Distributed in bar, plate and rod shapes. Macor is also available in custom shapes from our own ceramic fabrication group. Send us a print and we'll gladly give you a quote.

MACHINABLE CERAMICS Standard Sizes For Custom Applications.

Machinable ceramics were developed to provide design flexibility. This means they can be formed without hard tooling but with the ability to be changed at a later date if needed.

East Coast Sales offers three standard grades or types...

Aluminum Silicate ASM 815
Properties include low thermal expansion with a temperature tolerance up to 1100°C. It's readily machinable with standard tooling devices and is well suited to meet close tolerances.
Zero Ceram 820
This ceramic has virtually a zero thermal expansion factor and tolerates temperatures up to 1200°C. It's widely used in thermal shock environments.
Glass Bonded Ceramic 825
This ceramic has very high dielectric strength characteristics. It's non-porous and tolerates heat up to 550°C. Frequently used where vacuum and electrical requirements are critical.

Specifications	ASM815	ZCM 820	GBM 825
Max. operating temp. °F	2100	2200	1100
Hardness (Mohs scale)	6.0	5	5
Specific Gravity	2.3	2.1	3.3
Porosity percentage	.3	5	0
Thermal expansion per °F x 10^{^-6}	1.5	0	1.5
Compressive strength KPSI	40	25	30
Flexural Strength KPSI	15	10	15
Dielectric strength volts/mil	80	70	400
Loss factor a 1MHz	.033	-	.012
Dielectric constant at 1MHz	5.5	-	7.5
Thermal Conductivity BTU in/hr ft^²°F @ 75°F	9.0	11.5	2.8

Call East Coast Sales for your machined ceramic needs...