GM-120 Glass Ceramic vs. Engineering Porcelain
GM-120 glass ceramic belongs to the glass and glass-ceramics classification, while engineering porcelain belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is GM-120 glass ceramic and the bottom bar is engineering porcelain.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.5 | |
| 2.3 to 3.0 |
| Dielectric Strength (Breakdown Potential), kV/mm | 11 | |
| 11 to 25 |
| Elastic (Young's, Tensile) Modulus, GPa | 56 | |
| 67 to 150 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 10 | |
| 9.0 to 12 |
| Flexural Strength, MPa | 57 | |
| 43 to 160 |
| Maximum Thermal Shock, °C | 110 | |
| 170 to 290 |
| Stiffness to Weight: Axial, points | 13 | |
| 16 to 29 |
| Stiffness to Weight: Bending, points | 52 | |
| 49 to 65 |
| Thermal Conductivity, W/m-K | 3.0 | |
| 1.8 to 6.5 |
| Thermal Expansion, µm/m-K | 9.5 | |
| 2.0 to 6.6 |