Solder Alloy 121 vs. 60Pd-40Ag Alloy
Both solder alloy 121 and 60Pd-40Ag alloy are otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is solder alloy 121 and the bottom bar is 60Pd-40Ag alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 21 | |
| 100 |
| Elongation at Break, % | 25 | |
| 1.1 to 28 |
| Poisson's Ratio | 0.43 | |
| 0.38 |
| Shear Modulus, GPa | 7.5 | |
| 37 |
| Tensile Strength: Ultimate (UTS), MPa | 32 | |
| 340 to 720 |
Thermal Properties
| Latent Heat of Fusion, J/g | 29 | |
| 140 |
| Melting Completion (Liquidus), °C | 290 | |
| 1360 |
| Melting Onset (Solidus), °C | 230 | |
| 1310 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 240 |
| Thermal Conductivity, W/m-K | 31 | |
| 29 |
| Thermal Expansion, µm/m-K | 28 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.8 | |
| 4.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.4 | |
| 3.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 11 | |
| 11 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.1 | |
| 4.9 |
| Stiffness to Weight: Bending, points | 8.6 | |
| 14 |
| Strength to Weight: Axial, points | 0.84 | |
| 8.4 to 18 |
| Strength to Weight: Bending, points | 2.1 | |
| 9.6 to 16 |
| Thermal Diffusivity, mm2/s | 20 | |
| 11 |
| Thermal Shock Resistance, points | 3.9 | |
| 16 to 34 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0010 | |
| 0 |
| Antimony (Sb), % | 0 to 0.5 | |
| 0 |
| Arsenic (As), % | 0 to 0.030 | |
| 0 |
| Bismuth (Bi), % | 0 to 0.25 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.0050 | |
| 0 |
| Copper (Cu), % | 0 to 0.080 | |
| 0 to 0.1 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 0 |
| Lead (Pb), % | 83.4 to 85.5 | |
| 0 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Palladium (Pd), % | 0 | |
| 59.5 to 60.9 |
| Silver (Ag), % | 0 to 0.1 | |
| 39.1 to 40.5 |
| Tin (Sn), % | 14.5 to 15.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.3 |