Solder Alloy 121 vs. Grade 350 Maraging Steel
Solder alloy 121 belongs to the otherwise unclassified metals classification, while grade 350 maraging steel belongs to the iron 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 121 and the bottom bar is grade 350 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 21 | |
| 190 |
| Elongation at Break, % | 25 | |
| 4.1 to 18 |
| Poisson's Ratio | 0.43 | |
| 0.3 |
| Shear Modulus, GPa | 7.5 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 32 | |
| 1140 to 2420 |
Thermal Properties
| Latent Heat of Fusion, J/g | 29 | |
| 270 |
| Melting Completion (Liquidus), °C | 290 | |
| 1470 |
| Melting Onset (Solidus), °C | 230 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 450 |
| Thermal Expansion, µm/m-K | 28 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 39 |
| Density, g/cm3 | 11 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 5.6 | |
| 5.6 |
| Embodied Energy, MJ/kg | 93 | |
| 74 |
| Embodied Water, L/kg | 580 | |
| 160 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.1 | |
| 13 |
| Stiffness to Weight: Bending, points | 8.6 | |
| 23 |
| Strength to Weight: Axial, points | 0.84 | |
| 38 to 82 |
| Strength to Weight: Bending, points | 2.1 | |
| 29 to 49 |
| Thermal Shock Resistance, points | 3.9 | |
| 35 to 74 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0010 | |
| 0.050 to 0.15 |
| Antimony (Sb), % | 0 to 0.5 | |
| 0 |
| Arsenic (As), % | 0 to 0.030 | |
| 0 |
| Bismuth (Bi), % | 0 to 0.25 | |
| 0 |
| Boron (B), % | 0 | |
| 0 to 0.0030 |
| Cadmium (Cd), % | 0 to 0.0050 | |
| 0 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 | |
| 0 to 0.030 |
| Cobalt (Co), % | 0 | |
| 11.5 to 12.5 |
| Copper (Cu), % | 0 to 0.080 | |
| 0 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 61.2 to 64.6 |
| Lead (Pb), % | 83.4 to 85.5 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 0 to 0.010 | |
| 18 to 19 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Silver (Ag), % | 0 to 0.1 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Tin (Sn), % | 14.5 to 15.5 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 1.3 to 1.6 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |