C70250 Copper vs. R05400 Tantalum
C70250 copper belongs to the copper alloys classification, while R05400 tantalum belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is C70250 copper and the bottom bar is R05400 tantalum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 190 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 44 | |
| 69 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 740 | |
| 210 to 540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 220 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 140 |
| Thermal Conductivity, W/m-K | 170 | |
| 59 |
| Thermal Expansion, µm/m-K | 17 | |
| 6.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.9 | |
| 17 |
| Embodied Water, L/kg | 310 | |
| 650 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.4 | |
| 6.2 |
| Stiffness to Weight: Bending, points | 18 | |
| 11 |
| Strength to Weight: Axial, points | 16 to 23 | |
| 3.6 to 9.0 |
| Strength to Weight: Bending, points | 16 to 21 | |
| 4.8 to 8.8 |
| Thermal Diffusivity, mm2/s | 49 | |
| 25 |
| Thermal Shock Resistance, points | 18 to 26 | |
| 13 to 32 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0 to 0.010 |
| Copper (Cu), % | 92.7 to 97.5 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 0 | |
| 0 to 0.010 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Magnesium (Mg), % | 0.050 to 0.3 | |
| 0 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.020 |
| Nickel (Ni), % | 2.2 to 4.2 | |
| 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 |
| Silicon (Si), % | 0.25 to 1.2 | |
| 0 to 0.0050 |
| 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 1.0 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |