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Accuratus MACOR Machinable Glass Ceramic

Category Ceramic , Glass , Glass Ceramic , Machinable Ceramic
Manufacturer Accuratus Ceramic
Trade Name MACOR
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Macor is cast as a two phase glass. After casting, it is heat treated causing crystallization of one phase giving rise to its glass-like and ceramic-like characteristics.Key Properties of MACOR: Machinable Glass Ceramic; Low thermal conductivity; Low dielectric constant; High electrical resistance; Excellent resistance to high voltage puncture; Easily machined; Hermetic with no post-machining firing requiredTypical Uses of MACOR: Machinable Glass Ceramic; Electrical spacers in vacuum systems; Thermal insulators in heated or cooled assemblies; High intensity lamp reflectors; Crystal supports; Laser cavity components; Microcircuit and photonics packagingGeneral MACOR Machinable Glass Ceramic Information: Macor exhibits good thermal shock resistance and mechanical toughness when compared to conventional glasses with similar thermal and mechanical properties.Macor is usable in an air atmosphere to 1000° C. In vacuum systems, where the temperature exceeds 600° C, fluorine evolution will occur manifesting itself as boron trifluoride or hydrofluoric acid.Macor is attacked by halogen acids at elevated temperatures. It is significantly more resistant to NaOH. Alkali salts have a negligible corrosion effect.Macor is easily machined using standard metal working tools. It is fully dense and hermetic requiring no firing after machining to develop it’s physical properties. Tolerances of less than 10 microns (.0005") are easily maintained.Information provided by Accuratus.
Physical Properties Metric English Comments
Density 2.52 g/cc
0.0910 lb/in³
Porosity 0.00 %
0.00 %
Mechanical Properties Metric English Comments
Modulus of Elasticity 66.9 GPa
9700 ksi
Flexural Strength 94.0 MPa
13600 psi
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 12.6 µm/m-°C
7.00 µin/in-°F
Specific Heat Capacity 0.790 J/g-°C
0.189 BTU/lb-°F
Thermal Conductivity 1.50 W/m-K
10.4 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 1000 °C
1830 °F
no load
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+14 ohm-cm
>= 1.00e+14 ohm-cm
Dielectric Constant 6.0

@Frequency 1000 Hz
6.0

@Frequency 1000 Hz
Dielectric Strength 40.0 kV/mm
1020 kV/in
Dielectric Loss Index 0.0050

@Frequency 1000 Hz
0.0050

@Frequency 1000 Hz
Descriptive Properties Value Comments
Color White
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