C94500 Bronze vs. Solder Alloy 121
C94500 bronze belongs to the copper alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is C94500 bronze and the bottom bar is solder alloy 121.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 50 | |
| 11 |
| Elastic (Young's, Tensile) Modulus, GPa | 92 | |
| 21 |
| Elongation at Break, % | 12 | |
| 25 |
| Poisson's Ratio | 0.36 | |
| 0.43 |
| Shear Modulus, GPa | 34 | |
| 7.5 |
| Tensile Strength: Ultimate (UTS), MPa | 170 | |
| 32 |
Thermal Properties
| Latent Heat of Fusion, J/g | 160 | |
| 29 |
| Melting Completion (Liquidus), °C | 940 | |
| 290 |
| Melting Onset (Solidus), °C | 800 | |
| 230 |
| Specific Heat Capacity, J/kg-K | 330 | |
| 140 |
| Thermal Conductivity, W/m-K | 52 | |
| 31 |
| Thermal Expansion, µm/m-K | 20 | |
| 28 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 10 | |
| 8.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.7 | |
| 7.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 80 |
| Density, g/cm3 | 9.3 | |
| 11 |
| Embodied Carbon, kg CO2/kg material | 3.2 | |
| 5.6 |
| Embodied Energy, MJ/kg | 51 | |
| 93 |
| Embodied Water, L/kg | 380 | |
| 580 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.5 | |
| 1.1 |
| Stiffness to Weight: Bending, points | 16 | |
| 8.6 |
| Strength to Weight: Axial, points | 5.2 | |
| 0.84 |
| Strength to Weight: Bending, points | 7.4 | |
| 2.1 |
| Thermal Diffusivity, mm2/s | 17 | |
| 20 |
| Thermal Shock Resistance, points | 6.7 | |
| 3.9 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 to 0.0010 |
| Antimony (Sb), % | 0 to 0.8 | |
| 0 to 0.5 |
| Arsenic (As), % | 0 | |
| 0 to 0.030 |
| Bismuth (Bi), % | 0 | |
| 0 to 0.25 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.0050 |
| Copper (Cu), % | 66.7 to 78 | |
| 0 to 0.080 |
| Gold (Au), % | 0 | |
| 0 to 0.050 |
| Indium (In), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 0 to 0.15 | |
| 0 to 0.020 |
| Lead (Pb), % | 16 to 22 | |
| 83.4 to 85.5 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.050 | |
| 0 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 |
| Silver (Ag), % | 0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.080 | |
| 0 |
| Tin (Sn), % | 6.0 to 8.0 | |
| 14.5 to 15.5 |
| Zinc (Zn), % | 0 to 1.2 | |
| 0 to 0.0010 |