Grade 21 Titanium vs. 60Pd-40Ag Alloy
Grade 21 titanium belongs to the titanium alloys classification, while 60Pd-40Ag alloy belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 21 titanium and the bottom bar is 60Pd-40Ag alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 100 |
| Elongation at Break, % | 9.0 to 17 | |
| 1.1 to 28 |
| Poisson's Ratio | 0.32 | |
| 0.38 |
| Shear Modulus, GPa | 51 | |
| 37 |
| Shear Strength, MPa | 550 to 790 | |
| 220 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 340 to 720 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 140 |
| Melting Completion (Liquidus), °C | 1740 | |
| 1360 |
| Melting Onset (Solidus), °C | 1690 | |
| 1310 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 240 |
| Thermal Conductivity, W/m-K | 7.5 | |
| 29 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 15 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.4 | |
| 11 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 4.9 |
| Stiffness to Weight: Bending, points | 32 | |
| 14 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 8.4 to 18 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 9.6 to 16 |
| Thermal Diffusivity, mm2/s | 2.8 | |
| 11 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 16 to 34 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.1 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 |
| Molybdenum (Mo), % | 14 to 16 | |
| 0 |
| Niobium (Nb), % | 2.2 to 3.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.17 | |
| 0 |
| Palladium (Pd), % | 0 | |
| 59.5 to 60.9 |
| Silicon (Si), % | 0.15 to 0.25 | |
| 0 |
| Silver (Ag), % | 0 | |
| 39.1 to 40.5 |
| Titanium (Ti), % | 76 to 81.2 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.3 |