Grade 23 Titanium vs. Grade N7M Nickel
Grade 23 titanium belongs to the titanium alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 grade 23 titanium and the bottom bar is grade N7M nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 220 |
| Elongation at Break, % | 6.7 to 11 | |
| 22 |
| Fatigue Strength, MPa | 470 to 500 | |
| 190 |
| Poisson's Ratio | 0.32 | |
| 0.31 |
| Shear Modulus, GPa | 40 | |
| 85 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 940 | |
| 590 |
| Tensile Strength: Yield (Proof), MPa | 850 to 870 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 900 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1650 |
| Melting Onset (Solidus), °C | 1560 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 390 |
| Thermal Expansion, µm/m-K | 9.4 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 75 |
| Density, g/cm3 | 4.4 | |
| 9.3 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 16 |
| Embodied Energy, MJ/kg | 610 | |
| 200 |
| Embodied Water, L/kg | 200 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 61 to 100 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3430 to 3560 | |
| 220 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 22 |
| Strength to Weight: Axial, points | 58 to 59 | |
| 18 |
| Strength to Weight: Bending, points | 48 | |
| 17 |
| Thermal Shock Resistance, points | 67 to 68 | |
| 19 |
Alloy Composition
| Aluminum (Al), % | 5.5 to 6.5 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0 | |
| 0 to 1.0 |
| Hydrogen (H), % | 0 to 0.013 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 3.0 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 30 to 33 |
| Nickel (Ni), % | 0 | |
| 60.9 to 70 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.13 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 88.1 to 91 | |
| 0 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |