R05255 Alloy vs. C55281 Copper
R05255 alloy belongs to the otherwise unclassified metals classification, while C55281 copper belongs to the copper alloys. There are 13 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is R05255 alloy and the bottom bar is C55281 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 70 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 190 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 400 |
| Thermal Expansion, µm/m-K | 6.6 | |
| 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 8.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.3 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 11 | |
| 18 |
| Strength to Weight: Axial, points | 9.1 | |
| 6.1 |
| Strength to Weight: Bending, points | 8.9 | |
| 8.5 |
| Thermal Shock Resistance, points | 31 | |
| 7.7 |
Alloy Composition
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| Carbon (C), % | 0 to 0.010 | |
| 0 |
| Copper (Cu), % | 0 | |
| 88.5 to 89.4 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 |
| Iron (Fe), % | 0 to 0.010 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.020 | |
| 0 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 |
| Oxygen (O), % | 0 to 0.015 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 5.8 to 6.2 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 |
| Silver (Ag), % | 0 | |
| 4.8 to 5.2 |
| Tantalum (Ta), % | 95.9 to 98 | |
| 0 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Tungsten (W), % | 2.0 to 3.5 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |