Solder Alloy 704 vs. SAE-AISI M43 Steel
Solder alloy 704 belongs to the otherwise unclassified metals classification, while SAE-AISI M43 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is solder alloy 704 and the bottom bar is SAE-AISI M43 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 51 | |
| 200 |
| Poisson's Ratio | 0.36 | |
| 0.29 |
| Shear Modulus, GPa | 19 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 55 | |
| 810 to 2290 |
Thermal Properties
| Latent Heat of Fusion, J/g | 62 | |
| 270 |
| Melting Completion (Liquidus), °C | 240 | |
| 1550 |
| Melting Onset (Solidus), °C | 220 | |
| 1500 |
| Specific Heat Capacity, J/kg-K | 220 | |
| 450 |
| Thermal Conductivity, W/m-K | 50 | |
| 19 |
| Thermal Expansion, µm/m-K | 22 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.5 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 19 | |
| 8.5 |
| Embodied Energy, MJ/kg | 320 | |
| 120 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.8 | |
| 14 |
| Stiffness to Weight: Bending, points | 17 | |
| 24 |
| Strength to Weight: Axial, points | 2.1 | |
| 27 to 77 |
| Strength to Weight: Bending, points | 4.3 | |
| 24 to 47 |
| Thermal Diffusivity, mm2/s | 30 | |
| 5.3 |
| Thermal Shock Resistance, points | 3.5 | |
| 25 to 71 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0010 | |
| 0 |
| 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 | |
| 1.2 to 1.3 |
| Chromium (Cr), % | 0 | |
| 3.5 to 4.3 |
| Cobalt (Co), % | 0 | |
| 7.8 to 8.8 |
| Copper (Cu), % | 0 to 0.050 | |
| 0 to 0.25 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 70.8 to 76 |
| Lead (Pb), % | 0 to 0.070 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0.2 to 0.4 |
| Molybdenum (Mo), % | 0 | |
| 7.5 to 8.5 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.65 |
| Silver (Ag), % | 4.8 to 5.2 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tin (Sn), % | 94.3 to 95.2 | |
| 0 |
| Tungsten (W), % | 0 | |
| 2.3 to 3.0 |
| Vanadium (V), % | 0 | |
| 1.5 to 1.8 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |