ACI-ASTM CA40 Steel vs. Titanium Diboride
ACI-ASTM CA40 steel and titanium diboride belong to fundamentally different material chemistries. ACI-ASTM CA40 steel is a metal, while titanium diboride is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 material properties with values for both materials. Properties with values for just one material (24, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CA40 steel and the bottom bar is titanium diboride.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 290 |
| Poisson's Ratio | 0.28 | |
| 0.11 |
| Tensile Strength: Ultimate (UTS), MPa | 910 | |
| 280 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 750 | |
| 1270 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 870 |
| Thermal Conductivity, W/m-K | 25 | |
| 58 |
| Thermal Expansion, µm/m-K | 10 | |
| 8.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 4.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 35 |
| Stiffness to Weight: Bending, points | 25 | |
| 49 |
| Strength to Weight: Axial, points | 33 | |
| 17 |
| Strength to Weight: Bending, points | 27 | |
| 21 |
| Thermal Diffusivity, mm2/s | 6.7 | |
| 15 |
| Thermal Shock Resistance, points | 33 | |
| 8.7 |