Normalized SAE-AISI 4140 vs. Tungsten Carbide
Normalized SAE-AISI 4140 and tungsten carbide belong to fundamentally different material chemistries. Normalized SAE-AISI 4140 is a metal, while tungsten carbide 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 (22, in this case) are not shown.
For each property being compared, the top bar is normalized SAE-AISI 4140 and the bottom bar is tungsten carbide.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 630 |
| Poisson's Ratio | 0.29 | |
| 0.24 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 350 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 420 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 280 |
| Thermal Conductivity, W/m-K | 43 | |
| 85 |
| Thermal Expansion, µm/m-K | 13 | |
| 5.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 15 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 24 |
| Stiffness to Weight: Bending, points | 24 | |
| 20 |
| Strength to Weight: Axial, points | 36 | |
| 6.6 |
| Strength to Weight: Bending, points | 29 | |
| 7.5 |
| Thermal Diffusivity, mm2/s | 12 | |
| 21 |
| Thermal Shock Resistance, points | 30 | |
| 7.2 |