Solder Alloy 702 vs. Grade 21 Titanium
Solder alloy 702 belongs to the otherwise unclassified metals classification, while grade 21 titanium belongs to the titanium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is solder alloy 702 and the bottom bar is grade 21 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 51 | |
| 140 |
| Elongation at Break, % | 21 | |
| 9.0 to 17 |
| Poisson's Ratio | 0.36 | |
| 0.32 |
| Shear Modulus, GPa | 19 | |
| 51 |
| Tensile Strength: Ultimate (UTS), MPa | 53 | |
| 890 to 1340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 61 | |
| 410 |
| Melting Completion (Liquidus), °C | 220 | |
| 1740 |
| Melting Onset (Solidus), °C | 220 | |
| 1690 |
| Specific Heat Capacity, J/kg-K | 220 | |
| 500 |
| Thermal Conductivity, W/m-K | 62 | |
| 7.5 |
| Thermal Expansion, µm/m-K | 22 | |
| 7.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.4 | |
| 5.4 |
| Embodied Carbon, kg CO2/kg material | 17 | |
| 32 |
| Embodied Energy, MJ/kg | 290 | |
| 490 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.8 | |
| 14 |
| Stiffness to Weight: Bending, points | 17 | |
| 32 |
| Strength to Weight: Axial, points | 2.0 | |
| 46 to 69 |
| Strength to Weight: Bending, points | 4.2 | |
| 38 to 50 |
| Thermal Diffusivity, mm2/s | 38 | |
| 2.8 |
| Thermal Shock Resistance, points | 3.4 | |
| 66 to 100 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0010 | |
| 2.5 to 3.5 |
| 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 |
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Copper (Cu), % | 0 to 0.050 | |
| 0 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 0 to 0.4 |
| Lead (Pb), % | 0 to 0.070 | |
| 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 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.25 |
| Silver (Ag), % | 2.8 to 3.2 | |
| 0 |
| Tin (Sn), % | 96.3 to 97.2 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 76 to 81.2 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.4 |