R05255 Alloy vs. R05400 Tantalum
Both R05255 alloy and R05400 tantalum are otherwise unclassified metals. They have a very high 97% of their average alloy composition in common.
For each property being compared, the top bar is R05255 alloy and the bottom bar is R05400 tantalum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 1.1 to 28 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 70 | |
| 69 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 210 to 540 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 140 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 140 |
| Thermal Conductivity, W/m-K | 59 | |
| 59 |
| Thermal Expansion, µm/m-K | 6.6 | |
| 6.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 17 |
| Embodied Water, L/kg | 630 | |
| 650 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 | |
| 5.5 to 53 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 530 | |
| 50 to 420 |
| Stiffness to Weight: Axial, points | 6.3 | |
| 6.2 |
| Stiffness to Weight: Bending, points | 11 | |
| 11 |
| Strength to Weight: Axial, points | 9.1 | |
| 3.6 to 9.0 |
| Strength to Weight: Bending, points | 8.9 | |
| 4.8 to 8.8 |
| Thermal Diffusivity, mm2/s | 25 | |
| 25 |
| Thermal Shock Resistance, points | 31 | |
| 13 to 32 |
Alloy Composition
| Carbon (C), % | 0 to 0.010 | |
| 0 to 0.010 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 to 0.0015 |
| Iron (Fe), % | 0 to 0.010 | |
| 0 to 0.010 |
| Molybdenum (Mo), % | 0 to 0.020 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 to 0.1 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 to 0.015 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Tantalum (Ta), % | 95.9 to 98 | |
| 99.7 to 100 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 to 0.010 |
| Tungsten (W), % | 2.0 to 3.5 | |
| 0 to 0.050 |