| Property | Value | Units | Reference | Comment |
| Base electrical conductivity | R. Keizer et al, "Radiation-Resistant Magnets", CERN-82-05 | |||
| Sigma | 1.00E-14 | S/m | Compacted MgO powder | |
| Temperature dependent electrical conductivity = A*exp(-B/(T+273)) | S/m | I. Emelyanov et al, "Electrical Conductivty of
Magnesia Insulation For Heat-Resistant Cables In The Presence Of Intense Radiation And High Temperature", AtomnayaEnergiya, Vol.50,No. 1,pp. 25-29, January,1981 |
Compacted MgO powder | |
| A | 1.829 | |||
| B | 16300 | |||
| T | Input temperature | degC | ||
| Radiation dependent electrical conductivity = K*R^d | S/m | E. Hodgson et al, "Dose Rate Dependence of the Radiation-Induced Electrical Conductivity in MgO", Journal of Nuclear Materials 155-157 (1988) 357-360, curve fit to data | MgO | |
| d | 1.02 | |||
| K | 3.37E-10 | |||
| R | Input radiation flux | Gy/s | ||
| Dielectric properties | ||||
| Dielectric constant | 4 | - | Pyrotenax ENGINEERING DATA MANUAL | Compacted MgO powder |
| Insulation power factor | 0.1 | % | Pyrotenax ENGINEERING DATA MANUAL | Compacted MgO powder, when measured at room temperature, 60 Hz and 40 volts per mil |
| Dielectric strength | 3 | kV/mm | Pyrotenax ENGINEERING DATA MANUAL, derived from 5kV AC breakdown strength on 500MCM cable | Compacted MgO powder @ 100⁰C (temp. dependent) |
| Physical properties | ||||
| Density | 3 | gm/cc | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder (1) |
| Specific heat | 1.03 | J/gm-degK | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder (2) |
| Thermal conductivity | 2.36 | Watt/m-degK | Pyrotenax ENGINEERING DATA MANUAL | Compacted MgO powder |
| Coefficient of thermal expansion | 1.13E-05 | 1/degK | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder |
| Melting point | 2800 | degC | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder |
| Hardness | 3700 | N/mm2 | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder |
| Modulus of elasticity | 3.00E+05 | N/mm2 | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder |
| Modulus of elasticity | 9.60E+02 | N/mm2 | hand calcul. - extracted from test results of 500 MCM cable by PPPL | Compacted MgO powder |
| Shear modulus | 2.50E+00 | N/mm2 | hand calcul. - extracted from test results of 500 MCM cable by PPPL | Compacted MgO powder |
| Composition (High purity) | http://www.isomil.de/en/thermocouple-dielectric-strength.htm | Compacted MgO powder | ||
| MgO | >99.4 | % | ||
| AI2O3 | 0.019 | % | ||
| CaO | 0.02 | % | ||
| Fe2O3 | 0.018 | % | ||
| SiO2 | 0.02 | % | ||
| B, D, S | >10ppm | % | ||
| C | 50ppm | % | ||
| (1) May vary depending on supplier | ||||
| (2) .96 J/gm-degK - Cern 82-05 super Proton Synchrotron |