371 Molding Grade

Note: This is a variation of Micatemp / Mycalex (750ºF – 1300ºF Machinable Ceramic Materials).

Micatemp Machinable Glass/Mica Ceramic Composite are designed for electro-mechanical and thermo-mechanical applications requiring one or more of the following properties: good machinability, excellent resistance to heat and/or open flame up to 1832ºF (1000ºC), low thermal conductivity, excellent electrical insulation, extremely high resistance to pressure, high resistance to impact (cracking, and chipping), impervious to most chemicals (including oil, grease, and water), asbestos-free, and ecologically safe and non-toxic.

Specifications

FlammabilityDoes not burn
Moisture AbsorptionNil
Hardness - Rockwell H ( H )90
Hardness - Brinell ( H )56
Density ( lb/in³ )0.17
Flexural Strength ( psi )10000
Specific Gravity4.8
Coefficient of Thermal Expansion ( in/in/ºF )6.3 x 10-6
Coefficient of Thermal Expansion ( in/in/ºC )11.5 x 10-6
Tensile Strength ( psi )6500
Compressive Strength ( psi )35000
Arc Resistance ( sec )300
Thermal Conductivity ( BTU-in/hr-ft²-ºF )0.00136
Thermal Conductivity ( cal cm/secell namem² ºF )0.31
Dielectric Constant ( MHz )12.5
Specific Heat ( cal/g/ºC )0.25
IZOD Impact Strength ( ft lb/in )0.65
Maximum Continuous Operating Temperature ( ºC )370
Maximum Continuous Operating Temperature ( ºF )700
Mica FillerNatural
Radiation Resistance (3 x 1010 Rods-Cobalt)Good
Dielectric Strength (1/8" Thick) ( V/mil )350
Dissipation Factor ( MHz )0.006
Dry Surface Resistivity at (70ºF) ( ohm-cm )1015
Volume Resistivity at 70ºF ( ohm-cm )1014
Wet Surface Resistivity at (70ºF) ( ohm-cm )109
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