Alumina vs. Grade 200 Maraging Steel
Alumina and grade 200 maraging steel belong to fundamentally different material chemistries. Alumina is a ceramic material, while grade 200 maraging steel is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (27, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is alumina and the bottom bar is grade 200 maraging steel.
Mechanical Properties
Compressive (Crushing) Strength, MPa | 1920 to 2750 | |
730 to 1260 |
Elastic (Young's, Tensile) Modulus, GPa | 220 to 370 | |
190 |
Poisson's Ratio | 0.22 to 0.24 | |
0.3 |
Tensile Strength: Ultimate (UTS), MPa | 210 to 290 | |
970 to 1500 |
Thermal Properties
Melting Onset (Solidus), °C | 2040 | |
1420 |
Specific Heat Capacity, J/kg-K | 870 to 940 | |
460 |
Thermal Expansion, µm/m-K | 6.7 to 8.2 | |
12 |
Otherwise Unclassified Properties
Density, g/cm3 | 3.4 to 4.1 | |
8.2 |
Common Calculations
Stiffness to Weight: Axial, points | 35 to 53 | |
13 |
Stiffness to Weight: Bending, points | 57 to 62 | |
23 |
Strength to Weight: Axial, points | 14 to 23 | |
33 to 51 |
Strength to Weight: Bending, points | 19 to 28 | |
27 to 35 |
Thermal Shock Resistance, points | 4.9 to 14 | |
29 to 45 |