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Corning Macor® Machinable Glass Ceramic

Category	Ceramic , Glass , Glass Ceramic , Machinable Ceramic
Manufacturer	Corning Incorporated
Trade Name	Macor®
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Corning Macor® Machinable Glass Ceramic.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

The CTE of Macor® matches most metals and sealing glasses. It is nonwetting, exhibits zero porosity, and, unlike ductile materials, will not deform. It is an excellent insulator at high voltages, various frequencies, and high temperatures. When properly baked out, it will not outgas in vacuum.Used in ultra-high vacuum environments, constant vacuum applications, aerospace, nuclear-related experiments (not affected dimensionally by irradiation), welding nozzles, electrode and furnace fixtures, and medical equipment.Information provided by Corning Incorporated.

Physical Properties	Metric	English	Comments
Density	2.52 g/cc	0.0910 lb/in³
Porosity	0.0 %	0.0 %

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	250	250	100g
Hardness, Rockwell A	48	48
Modulus of Elasticity	66.9 GPa	9700 ksi
Modulus of Rupture	0.0938 GPa	13.6 ksi
Compressive Strength	345 MPa	50000 psi
Poissons Ratio	0.29	0.29
Fracture Toughness	1.53 MPa-m½	1.39 ksi-in½
Shear Modulus	25.5 GPa	3700 ksi

Thermal Properties	Metric	English	Comments
CTE, linear	7.40 µm/m-°C @Temperature -200 - 25.0 °C	4.11 µin/in-°F @Temperature -328 - 77.0 °F
	9.30 µm/m-°C @Temperature 25.0 - 300 °C	5.17 µin/in-°F @Temperature 77.0 - 572 °F
	11.4 µm/m-°C @Temperature 25.0 - 600 °C	6.33 µin/in-°F @Temperature 77.0 - 1110 °F
	12.6 µm/m-°C @Temperature 25.0 - 800 °C	7.00 µin/in-°F @Temperature 77.0 - 1470 °F
Specific Heat Capacity	0.790 J/g-°C	0.189 BTU/lb-°F
Thermal Conductivity	1.46 W/m-K	10.1 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	800 °C	1470 °F	Continuous
	1000 °C	1830 °F	No Load

Component Elements Properties	Metric	English
Al2O3	16 %	16 %
B2O3	7.0 %	7.0 %
Fluorine, F	4.0 %	4.0 %
K2O	10 %	10 %
MgO	17 %	17 %
SiO2	46 %	46 %

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+16 ohm-cm	>= 1.00e+16 ohm-cm
Dielectric Constant	5.67 @Frequency 8.50e+9 Hz	5.67 @Frequency 8.50e+9 Hz
	6.03 @Frequency 1000 Hz	6.03 @Frequency 1000 Hz
Dielectric Strength	30.9 kV/mm @Thickness 0.305 mm	785 kV/in @Thickness 0.0120 in	AC
	205.0 kV/mm @Thickness 0.305 mm	5206 kV/in @Thickness 0.0120 in	DC
Dissipation Factor	0.0047 @Frequency 1000 Hz	0.0047 @Frequency 1000 Hz
	0.0071 @Frequency 8.50e+9 Hz	0.0071 @Frequency 8.50e+9 Hz

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