ASTM B617 Coin Silver vs. Grade 21 Titanium
ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while grade 21 titanium belongs to the titanium alloys. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is grade 21 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 75 | |
| 140 |
| Elongation at Break, % | 1.1 to 22 | |
| 9.0 to 17 |
| Poisson's Ratio | 0.37 | |
| 0.32 |
| Shear Modulus, GPa | 28 | |
| 51 |
| Shear Strength, MPa | 180 to 290 | |
| 550 to 790 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 520 | |
| 890 to 1340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 120 | |
| 410 |
| Melting Completion (Liquidus), °C | 870 | |
| 1740 |
| Melting Onset (Solidus), °C | 780 | |
| 1690 |
| Specific Heat Capacity, J/kg-K | 250 | |
| 500 |
| Thermal Expansion, µm/m-K | 19 | |
| 7.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 5.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.1 | |
| 14 |
| Stiffness to Weight: Bending, points | 14 | |
| 32 |
| Strength to Weight: Axial, points | 7.7 to 14 | |
| 46 to 69 |
| Strength to Weight: Bending, points | 9.3 to 14 | |
| 38 to 50 |
| Thermal Shock Resistance, points | 14 to 25 | |
| 66 to 100 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 2.5 to 3.5 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Copper (Cu), % | 9.0 to 10.4 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.4 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 14 to 16 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Niobium (Nb), % | 0 | |
| 2.2 to 3.2 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.17 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.25 |
| Silver (Ag), % | 89.6 to 91 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 76 to 81.2 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 |
| Residuals, % | 0 to 0.060 | |
| 0 to 0.4 |