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
| Flammability | Does not burn |
|---|---|
| Moisture Absorption | Nil |
| Hardness - Rockwell H ( H ) | 90 |
| Hardness - Brinell ( H ) | 56 |
| Density ( lb/in³ ) | 0.14 |
| Flexural Strength ( psi ) | 10000 |
| Specific Gravity | 3.8 |
| Coefficient of Thermal Expansion ( in/in/ºF ) | 6.0 x 10-6 |
| Coefficient of Thermal Expansion ( in/in/ºC ) | 11.2 x 10-6 |
| Tensile Strength ( psi ) | 6500 |
| Compressive Strength ( psi ) | 33000 |
| Arc Resistance ( sec ) | 325 |
| Thermal Conductivity ( BTU-in/hr-ft²-ºF ) | 0.00120 |
| Thermal Conductivity ( cal cm/secell namem² ºF ) | 0.29 |
| Dielectric Constant ( MHz ) | 8.6 |
| Specific Heat ( cal/g/ºC ) | 0.24 |
| IZOD Impact Strength ( ft lb/in ) | 0.7 |
| Maximum Continuous Operating Temperature ( ºC ) | 400 |
| Maximum Continuous Operating Temperature ( ºF ) | 750 |
| Mica Filler | Natural |
| Radiation Resistance (3 x 1010 Rods-Cobalt) | Good |
| Dielectric Strength (1/8" Thick) ( V/mil ) | 375 |
| Permittivity ( MHz ) | 9.3/8.4 |
| Dissipation Factor ( MHz ) | 0.0012 |
| Loss Index ( MHz ) | 0.0115 |
| Dry Surface Resistivity at (70ºF) ( ohm-cm ) | 1015 |
| Volume Resistivity at 70ºF ( ohm-cm ) | 1013 |
| Wet Surface Resistivity at (70ºF) ( ohm-cm ) | 109 |
| Modulus of Elasticity (in Tension) ( psi ) | 7.0 x 106 |