Ceramic cores immersion heater
Ceramic core immersion heaters consist of a high temperature ceramic former that then has a spiralled resistance wire coil running through a number of holes along the length of the former.
These formers are then joined together to give the customers required heated length. Generally then a central stainless steel tie bar locks all the formers together.
Properties | Units | Steatite | Cordierite | Mullite |
Colour | White | Yellow | White | |
Density | g/cm3 | 2.7 | 1.9 | 2.0 |
Flexural Strength | Mpa | 140 | 30 | 120 |
Compressive Strength | MPa | 900 | 350 | 500 |
Max Use Temperature | °C | 1000 | 1200 | 1300 |
Thermal Condutivity | W/m.K | 2~3 | 1.3~1.8 | 2~6 |
Thermal Expansion Cofficient | 10-6/°C | 7 ~ 9 | 1.5~3.5 | 5~6 |
Thermal Shock Resistance | K | 100 | 300 | 150 |
Specific Heat | J/kg.K | 850 | 800 | 900 |
Dielectric Strength | KV/mm | 20 | — | 30 |
Dielectric Constant | Er | 6 | — | 8 |
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