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Rulon Bearings

Crystex Composites Mykroy/Mycalex 555 Molding Grade Glass-bonded Mica Composite  (discontinued **)
Categories: Ceramic; Glass; Glass Ceramic

Material Notes: Synthetic mica filler. Does not burn. Better radiation resistance (3 x 10^10 Rads-Cobalt) than grade 410.

This ceramoplastic material is a versatile and efficient insulating material designed to meet the exacting demands of technical markets, worldwide. Glass-Bonded Mica is the only inorganic material to bridge the performance materials gap between organic plastics and ceramics.

This unique high performance technical ceramic is a union of finely powered electrical quality glass and precisely defined and classified mica. The union of mica and glass takes place under simultaneous pressure and heat, transforming the materials into a new composition that inherits all the insulating advantages of both constituents.

These materials are easily machined, mold like plastic, and have a wide range of operating temperatures. They find applications in the aircraft, laser, communications, aerospace, cryogenic, electronic, radiation, semiconductor, computer, automotive, and power distribution industries.

Typical data below provided by Mykroy/Mycalex Ceramics.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 3.70 g/cc0.134 lb/in³
Moisture Absorption at Equilibrium 0.00 %0.00 %Nil
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell A 4747
Hardness, Rockwell H 9090
Tensile Strength, Ultimate 41.4 MPa6000 psi
Modulus of Elasticity 49.6 GPa7200 ksi
Flexural Strength 62.1 MPa9000 psi
Compressive Strength 234 MPa34000 psi
Izod Impact, Notched 4.27 J/cm8.00 ft-lb/in
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.00e+14 ohm-cm1.00e+14 ohm-cm
Surface Resistivity per Square 1.00e+15 ohm1.00e+15 ohm
Dielectric Constant 8.8
@Frequency 1e+6 Hz
8.8
@Frequency 1e+6 Hz
Dielectric Strength 14.8 kV/mm375 kV/in
Dissipation Factor 0.0113
@Frequency 1e+6 Hz
0.0113
@Frequency 1e+6 Hz
Dielectric Loss Index 0.011
@Frequency 1e+6 Hz
0.011
@Frequency 1e+6 Hz
Arc Resistance 325 sec325 sec
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.95 µm/m-°C
@Temperature 350 °C
6.083 µin/in-°F
@Temperature 662 °F
 12.55 µm/m-°C
@Temperature 25.0 °C
6.972 µin/in-°F
@Temperature 77.0 °F
Specific Heat Capacity 1.00 J/g-°C0.239 BTU/lb-°F
Thermal Conductivity 1.22 W/m-K8.47 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 400 °C752 °F

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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CMYKROY20a / 1658

Aluminum Castings

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