Advanced Ceramics Contacts

Frank Gorman
Manager
Mike Shepherd
Manufacturing Manager
Diana Tokarski
Sales/Service Representative.
Ted Ruwe
Advanced Ceramics Q.A.

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Macor®  Specifications

 

Composition	Glass-Ceramic, 55% mica crystal, 45% matrix glass
Density	2.52 g/cm3
Porosity	0
Hardness	250 Knoop
Maximum use temperature	1000 ° C, 1832 ° F, no load
Coefficient of thermal expansion	94x10-7 in/in ° C, 52x10-7 in/in ° F
Compressive strength	50,000 psi
Flexural strength	15,000 psi
Dielectric strength	1000 Volts-mil
Volume resistivity	> 1016 ohm-cm

 

Machinability

	Cutting Speed	Feed Rate	Depth of Cut
Turning	30-50 sfm	0.002-0.005 ipr	0.150-0.250 in.
Milling	20-35 sfm	0.002 in. per tooth	0.150-0.200 in.
Band Sawing	100 ft/min (carbide 1/4" blade)
Drilling	1/4" 300 rpm 0.005 ipr - 1" 100 rpm 0.012 ipr

 

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