ASTM B541 Gold vs. Type 2 Niobium
Both ASTM B541 gold and Type 2 niobium are 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.
For each property being compared, the top bar is ASTM B541 gold and the bottom bar is Type 2 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 6.0 to 14 | |
| 29 |
| Poisson's Ratio | 0.4 | |
| 0.4 |
| Shear Modulus, GPa | 38 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 1180 | |
| 140 |
| Tensile Strength: Yield (Proof), MPa | 480 to 900 | |
| 82 |
Thermal Properties
| Latent Heat of Fusion, J/g | 90 | |
| 320 |
| Specific Heat Capacity, J/kg-K | 170 | |
| 270 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 8.6 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 65 to 91 | |
| 35 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1090 to 3830 | |
| 32 |
| Stiffness to Weight: Axial, points | 3.4 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 9.0 | |
| 18 |
| Strength to Weight: Axial, points | 11 to 19 | |
| 4.6 |
| Strength to Weight: Bending, points | 9.8 to 14 | |
| 7.1 |
| Thermal Shock Resistance, points | 36 to 63 | |
| 13 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.010 |
| Copper (Cu), % | 13.5 to 15.5 | |
| 0 |
| Gold (Au), % | 70.5 to 72.5 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 0 | |
| 0 to 0.010 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 | |
| 99.5 to 100 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.025 |
| Platinum (Pt), % | 8.0 to 9.0 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.0050 |
| Silver (Ag), % | 4.0 to 5.0 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.3 |
| Titanium (Ti), % | 0 | |
| 0 to 0.030 |
| Tungsten (W), % | 0 | |
| 0 to 0.050 |
| Zinc (Zn), % | 0.7 to 1.3 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |
| Residuals, % | 0 to 0.4 | |
| 0 |