Annealed ASTM B685 Alloy vs. Annealed R05400 Tantalum
Both annealed ASTM B685 alloy and annealed R05400 tantalum are otherwise unclassified metals. Both are furnished in the annealed condition. There are 15 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is annealed ASTM B685 alloy and the bottom bar is annealed R05400 tantalum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 190 |
| Elongation at Break, % | 23 | |
| 28 |
| Poisson's Ratio | 0.37 | |
| 0.34 |
| Shear Modulus, GPa | 43 | |
| 69 |
| Tensile Strength: Ultimate (UTS), MPa | 660 | |
| 210 |
Thermal Properties
| Latent Heat of Fusion, J/g | 180 | |
| 140 |
| Melting Completion (Liquidus), °C | 1230 | |
| 3020 |
| Specific Heat Capacity, J/kg-K | 300 | |
| 140 |
| Thermal Expansion, µm/m-K | 14 | |
| 6.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 11 | |
| 17 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.1 | |
| 6.2 |
| Stiffness to Weight: Bending, points | 15 | |
| 11 |
| Strength to Weight: Axial, points | 17 | |
| 3.6 |
| Strength to Weight: Bending, points | 16 | |
| 4.8 |
| Thermal Shock Resistance, points | 28 | |
| 13 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 | |
| 0 to 0.010 |
| Copper (Cu), % | 39.5 to 40.5 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.010 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0 | |
| 0 to 0.1 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.030 |
| Palladium (Pd), % | 59 to 60.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.0050 |
| Silver (Ag), % | 0 to 0.1 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 99.7 to 100 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 | |
| 0 to 0.050 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 |
| Residuals, % | 0 to 0.2 | |
| 0 |