Solder Alloy 704 vs. 6105 Aluminum
Solder alloy 704 belongs to the otherwise unclassified metals classification, while 6105 aluminum belongs to the aluminum alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 solder alloy 704 and the bottom bar is 6105 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 51 | |
| 68 |
| Elongation at Break, % | 30 | |
| 9.0 to 16 |
| Poisson's Ratio | 0.36 | |
| 0.33 |
| Shear Modulus, GPa | 19 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 55 | |
| 190 to 280 |
Thermal Properties
| Latent Heat of Fusion, J/g | 62 | |
| 410 |
| Melting Completion (Liquidus), °C | 240 | |
| 650 |
| Melting Onset (Solidus), °C | 220 | |
| 600 |
| Specific Heat Capacity, J/kg-K | 220 | |
| 900 |
| Thermal Conductivity, W/m-K | 50 | |
| 180 to 190 |
| Thermal Expansion, µm/m-K | 22 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 13 | |
| 46 to 50 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 15 | |
| 150 to 170 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.5 | |
| 2.7 |
| Embodied Carbon, kg CO2/kg material | 19 | |
| 8.3 |
| Embodied Energy, MJ/kg | 320 | |
| 150 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.8 | |
| 14 |
| Stiffness to Weight: Bending, points | 17 | |
| 51 |
| Strength to Weight: Axial, points | 2.1 | |
| 20 to 29 |
| Strength to Weight: Bending, points | 4.3 | |
| 28 to 35 |
| Thermal Diffusivity, mm2/s | 30 | |
| 72 to 79 |
| Thermal Shock Resistance, points | 3.5 | |
| 8.6 to 12 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0010 | |
| 97.2 to 99 |
| Antimony (Sb), % | 0 to 0.1 | |
| 0 |
| Arsenic (As), % | 0 to 0.030 | |
| 0 |
| Bismuth (Bi), % | 0 to 0.1 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.0020 | |
| 0 |
| Chromium (Cr), % | 0 | |
| 0 to 0.1 |
| Copper (Cu), % | 0 to 0.050 | |
| 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 to 0.35 |
| Lead (Pb), % | 0 to 0.070 | |
| 0 |
| Magnesium (Mg), % | 0 | |
| 0.45 to 0.8 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0.6 to 1.0 |
| Silver (Ag), % | 4.8 to 5.2 | |
| 0 |
| Tin (Sn), % | 94.3 to 95.2 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 to 0.1 |
| Residuals, % | 0 | |
| 0 to 0.15 |