Grade 18 Titanium vs. EN 2.4878 Nickel
Grade 18 titanium belongs to the titanium alloys classification, while EN 2.4878 nickel belongs to the nickel alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is grade 18 titanium and the bottom bar is EN 2.4878 nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 13 to 17 |
| Fatigue Strength, MPa | 330 to 480 | |
| 400 to 410 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 78 |
| Shear Strength, MPa | 420 to 590 | |
| 750 to 760 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 980 | |
| 1210 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 540 to 810 | |
| 740 to 780 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 330 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 1030 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1370 |
| Melting Onset (Solidus), °C | 1590 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 460 |
| Thermal Conductivity, W/m-K | 8.3 | |
| 11 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 41 | |
| 10 |
| Embodied Energy, MJ/kg | 670 | |
| 150 |
| Embodied Water, L/kg | 270 | |
| 370 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 110 | |
| 150 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1380 to 3110 | |
| 1370 to 1540 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 43 to 61 | |
| 41 to 42 |
| Strength to Weight: Bending, points | 39 to 49 | |
| 31 |
| Thermal Diffusivity, mm2/s | 3.4 | |
| 2.8 |
| Thermal Shock Resistance, points | 47 to 67 | |
| 37 to 39 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 1.2 to 1.6 |
| Boron (B), % | 0 | |
| 0.010 to 0.015 |
| Carbon (C), % | 0 to 0.080 | |
| 0.030 to 0.070 |
| Chromium (Cr), % | 0 | |
| 23 to 25 |
| Cobalt (Co), % | 0 | |
| 19 to 21 |
| Copper (Cu), % | 0 | |
| 0 to 0.2 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 | |
| 1.0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 43.6 to 52.2 |
| Niobium (Nb), % | 0 | |
| 0.7 to 1.2 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.15 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.0070 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.050 |
| Titanium (Ti), % | 92.5 to 95.5 | |
| 2.8 to 3.2 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0.030 to 0.070 |
| Residuals, % | 0 to 0.4 | |
| 0 |