Solder Alloy 122 vs. K94200 Alloy
Solder alloy 122 belongs to the otherwise unclassified metals classification, while K94200 alloy belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is solder alloy 122 and the bottom bar is K94200 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 20 | |
| 140 |
| Elongation at Break, % | 30 | |
| 5.0 to 32 |
| Poisson's Ratio | 0.43 | |
| 0.34 |
| Shear Modulus, GPa | 6.9 | |
| 54 |
| Tensile Strength: Ultimate (UTS), MPa | 30 | |
| 500 to 710 |
Thermal Properties
| Melting Onset (Solidus), °C | 270 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 500 |
| Thermal Conductivity, W/m-K | 25 | |
| 15 |
| Thermal Expansion, µm/m-K | 28 | |
| 5.0 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.9 | |
| 2.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.3 | |
| 3.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 11 | |
| 8.2 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.0 | |
| 9.8 |
| Stiffness to Weight: Bending, points | 8.2 | |
| 21 |
| Strength to Weight: Axial, points | 0.77 | |
| 17 to 24 |
| Strength to Weight: Bending, points | 2.0 | |
| 17 to 22 |
| Thermal Diffusivity, mm2/s | 17 | |
| 3.7 |
| Thermal Shock Resistance, points | 3.9 | |
| 49 to 70 |