Annealed SAE-AISI A7 vs. Annealed R05400 Tantalum
Annealed SAE-AISI A7 belongs to the iron alloys classification, while annealed R05400 tantalum belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is annealed SAE-AISI A7 and the bottom bar is annealed R05400 tantalum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 72 | |
| 69 |
| Tensile Strength: Ultimate (UTS), MPa | 800 | |
| 210 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 140 |
| Melting Completion (Liquidus), °C | 1470 | |
| 3020 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 140 |
| Thermal Conductivity, W/m-K | 37 | |
| 59 |
| Thermal Expansion, µm/m-K | 12 | |
| 6.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 17 |
| Embodied Water, L/kg | 100 | |
| 650 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 6.2 |
| Stiffness to Weight: Bending, points | 25 | |
| 11 |
| Strength to Weight: Axial, points | 29 | |
| 3.6 |
| Strength to Weight: Bending, points | 25 | |
| 4.8 |
| Thermal Diffusivity, mm2/s | 10 | |
| 25 |
| Thermal Shock Resistance, points | 27 | |
| 13 |
Alloy Composition
| Carbon (C), % | 2.0 to 2.9 | |
| 0 to 0.010 |
| Chromium (Cr), % | 5.0 to 5.8 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 81.4 to 87.7 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0 to 0.8 | |
| 0 |
| Molybdenum (Mo), % | 0.9 to 1.4 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 to 0.3 | |
| 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 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 99.7 to 100 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 0.5 to 1.5 | |
| 0 to 0.050 |
| Vanadium (V), % | 3.9 to 5.2 | |
| 0 |