ASTM A369 Grade FPA vs. Solder Alloy 402
ASTM A369 grade FPA belongs to the iron alloys classification, while solder alloy 402 belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM A369 grade FPA and the bottom bar is solder alloy 402.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 52 |
| Elongation at Break, % | 27 | |
| 20 |
| Poisson's Ratio | 0.29 | |
| 0.36 |
| Shear Modulus, GPa | 73 | |
| 19 |
| Tensile Strength: Ultimate (UTS), MPa | 380 | |
| 57 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 64 |
| Melting Completion (Liquidus), °C | 1460 | |
| 310 |
| Melting Onset (Solidus), °C | 1420 | |
| 230 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 230 |
| Thermal Conductivity, W/m-K | 52 | |
| 61 |
| Thermal Expansion, µm/m-K | 12 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 15 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 18 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 7.3 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 15 |
| Embodied Energy, MJ/kg | 18 | |
| 250 |
| Embodied Water, L/kg | 46 | |
| 1180 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 3.9 |
| Stiffness to Weight: Bending, points | 24 | |
| 17 |
| Strength to Weight: Axial, points | 13 | |
| 2.2 |
| Strength to Weight: Bending, points | 15 | |
| 4.5 |
| Thermal Diffusivity, mm2/s | 14 | |
| 37 |
| Thermal Shock Resistance, points | 12 | |
| 3.6 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.0010 |
| Antimony (Sb), % | 0 | |
| 0 to 0.1 |
| Arsenic (As), % | 0 | |
| 0 to 0.030 |
| Bismuth (Bi), % | 0 | |
| 0 to 0.1 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.0020 |
| Carbon (C), % | 0 to 0.25 | |
| 0 |
| Copper (Cu), % | 0 | |
| 2.5 to 3.5 |
| Gold (Au), % | 0 | |
| 0 to 0.050 |
| Indium (In), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 98.3 to 99.63 | |
| 0 to 0.020 |
| Lead (Pb), % | 0 | |
| 0 to 0.070 |
| Manganese (Mn), % | 0.27 to 0.93 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0.1 to 0.5 | |
| 0 |
| Silver (Ag), % | 0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 |
| Tin (Sn), % | 0 | |
| 95.9 to 97.5 |
| Zinc (Zn), % | 0 | |
| 0 to 0.0010 |