Solder Alloy 181 vs. R05255 Alloy
Both solder alloy 181 and R05255 alloy are otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is solder alloy 181 and the bottom bar is R05255 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 18 | |
| 190 |
| Elongation at Break, % | 41 | |
| 20 |
| Poisson's Ratio | 0.44 | |
| 0.34 |
| Shear Modulus, GPa | 6.1 | |
| 70 |
| Tensile Strength: Ultimate (UTS), MPa | 27 | |
| 540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 26 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 130 | |
| 140 |
| Thermal Conductivity, W/m-K | 24 | |
| 59 |
| Thermal Expansion, µm/m-K | 29 | |
| 6.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 11 | |
| 17 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.86 | |
| 6.3 |
| Stiffness to Weight: Bending, points | 7.7 | |
| 11 |
| Strength to Weight: Axial, points | 0.66 | |
| 9.1 |
| Strength to Weight: Bending, points | 1.8 | |
| 8.9 |
| Thermal Diffusivity, mm2/s | 16 | |
| 25 |
| Thermal Shock Resistance, points | 3.8 | |
| 31 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0010 | |
| 0 |
| Antimony (Sb), % | 0 to 0.2 | |
| 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 0.010 |
| Copper (Cu), % | 0 to 0.080 | |
| 0 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 0 to 0.010 |
| Lead (Pb), % | 96.2 to 98 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0 | |
| 0 to 0.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0 to 0.0050 |
| Silver (Ag), % | 2.0 to 3.0 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 95.9 to 98 |
| Tin (Sn), % | 0 to 0.25 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 | |
| 2.0 to 3.5 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |