7075 Aluminum vs. Engineering Porcelain
7075 aluminum and engineering porcelain belong to fundamentally different material chemistries. 7075 aluminum is a metal, while engineering porcelain is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (28, in this case) are not shown.
For each property being compared, the top bar is 7075 aluminum and the bottom bar is engineering porcelain.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 67 to 150 |
| Poisson's Ratio | 0.32 | |
| 0.17 |
| Shear Modulus, GPa | 26 | |
| 34 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 590 | |
| 130 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 200 | |
| 1170 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 600 to 1000 |
| Thermal Conductivity, W/m-K | 130 | |
| 1.8 to 6.5 |
| Thermal Expansion, µm/m-K | 23 | |
| 2.0 to 6.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.0 | |
| 2.3 to 3.0 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 16 to 29 |
| Stiffness to Weight: Bending, points | 46 | |
| 49 to 65 |
| Strength to Weight: Axial, points | 22 to 54 | |
| 12 to 16 |
| Strength to Weight: Bending, points | 28 to 52 | |
| 19 to 25 |
| Thermal Diffusivity, mm2/s | 50 | |
| 0.73 to 3.9 |
| Thermal Shock Resistance, points | 10 to 25 | |
| 11 to 53 |