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| Characteristics | Unit | Test Method | Muscovite Mica Type:CM 55 | Phlogopite Mica Type:CP 55 | |
| Mica Content | % | IEC 371-2 | > 90 % | ||
| Silicone Content | % | IEC 371-2 | <10 % | ||
Thickness Tolerance(mm) | Average | % | IEC 371-2 | +/- 5% | |
| Individual | +/- 6% | ||||
| Standard Size | mm | IEC 371-2 | 1000 x 600, 1000 x 1200, 1000 x 2400 | ||
| Density | g/cm3 | IEC 371-2 | 2.0 ~ 2.30 | 2.0 ~ 2.30 | |
| Flexural strength | N/mm2 | ISO 178 | ≥180 | ≥160 | |
Dielectric strength at 23C After Heating at 400C /1 Hour&Tested at 23C After Heating at 600C /1 Hour&Tested at 23C | KV/mm | IEC 243 | >25 >13 >10 | >24 >12 >9 | |
| Insulation resistance at 23 °C at 400 °C at 500 °C | Ohm.cm | IEC 93 | 1016 1012 109 | 1016 1012 109 | |
| Resistance to temperature | Continuous Peak | 700 oC 800 oC | 800 oC 1000o C | ||
| Weight Loss | @ 550 °C for 4 Hrs @ 700 °C for 4 Hrs | IEC371-2 | <1% <2% | ||
| Water Absorption | after 24 hrs | ISO 62 | <1.0 % | ||
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Pachamba, Giridih, Jharkhand 
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