R60705 Alloy vs. C18700 Copper
R60705 alloy belongs to the otherwise unclassified metals classification, while C18700 copper belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is R60705 alloy and the bottom bar is C18700 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 98 | |
| 110 |
| Elongation at Break, % | 18 | |
| 9.0 to 9.6 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 37 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 290 to 330 |
| Tensile Strength: Yield (Proof), MPa | 430 | |
| 230 to 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 210 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 380 |
| Thermal Conductivity, W/m-K | 17 | |
| 380 |
| Thermal Expansion, µm/m-K | 6.3 | |
| 17 |
Otherwise Unclassified Properties
| Density, g/cm3 | 6.7 | |
| 9.0 |
| Embodied Water, L/kg | 450 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 90 | |
| 24 to 29 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 950 | |
| 240 to 280 |
| Stiffness to Weight: Axial, points | 8.1 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 23 | |
| 18 |
| Strength to Weight: Axial, points | 22 | |
| 9.0 to 10 |
| Strength to Weight: Bending, points | 22 | |
| 11 to 12 |
| Thermal Diffusivity, mm2/s | 9.5 | |
| 110 |
| Thermal Shock Resistance, points | 63 | |
| 10 to 12 |
Alloy Composition
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| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Chromium (Cr), % | 0 to 0.2 | |
| 0 |
| Copper (Cu), % | 0 | |
| 98 to 99.2 |
| Hafnium (Hf), % | 0 to 4.5 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0050 | |
| 0 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 |
| Lead (Pb), % | 0 | |
| 0.8 to 1.5 |
| Niobium (Nb), % | 2.0 to 3.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.025 | |
| 0 |
| Oxygen (O), % | 0 to 0.18 | |
| 0 |
| Zirconium (Zr), % | 91 to 98 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.5 |