Nickel 718 vs. Tungsten Carbide
Nickel 718 and tungsten carbide belong to fundamentally different material chemistries. Nickel 718 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 15 material properties with values for both materials. Properties with values for just one material (23, in this case) are not shown.
For each property being compared, the top bar is nickel 718 and the bottom bar is tungsten carbide.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 630 |
| Fracture Toughness, MPa-m1/2 | 220 | |
| 12 |
| Poisson's Ratio | 0.29 | |
| 0.24 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1530 | |
| 350 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 980 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 280 |
| Thermal Conductivity, W/m-K | 11 | |
| 85 |
| Thermal Expansion, µm/m-K | 13 | |
| 5.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.3 | |
| 15 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 24 |
| Stiffness to Weight: Bending, points | 23 | |
| 20 |
| Strength to Weight: Axial, points | 31 to 51 | |
| 6.6 |
| Strength to Weight: Bending, points | 25 to 35 | |
| 7.5 |
| Thermal Diffusivity, mm2/s | 3.0 | |
| 21 |
| Thermal Shock Resistance, points | 27 to 44 | |
| 7.2 |