Solder Alloy 201 vs. ASTM A372 Grade M Steel
Solder alloy 201 belongs to the otherwise unclassified metals classification, while ASTM A372 grade M steel belongs to the iron alloys. There are 24 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 solder alloy 201 and the bottom bar is ASTM A372 grade M steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 13 | |
| 240 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 50 | |
| 190 |
| Elongation at Break, % | 38 | |
| 18 to 21 |
| Poisson's Ratio | 0.35 | |
| 0.29 |
| Shear Modulus, GPa | 19 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 41 | |
| 810 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 64 | |
| 250 |
| Melting Completion (Liquidus), °C | 240 | |
| 1460 |
| Melting Onset (Solidus), °C | 240 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 220 | |
| 470 |
| Thermal Conductivity, W/m-K | 28 | |
| 46 |
| Thermal Expansion, µm/m-K | 21 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 12 | |
| 8.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 15 | |
| 9.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.3 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 15 | |
| 2.0 |
| Embodied Energy, MJ/kg | 250 | |
| 27 |
| Embodied Water, L/kg | 1320 | |
| 61 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 17 | |
| 24 |
| Strength to Weight: Axial, points | 1.6 | |
| 29 to 32 |
| Strength to Weight: Bending, points | 3.6 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 17 | |
| 12 |
| Thermal Shock Resistance, points | 2.7 | |
| 24 to 27 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0010 | |
| 0 |
| Antimony (Sb), % | 4.5 to 5.5 | |
| 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 0.23 |
| Chromium (Cr), % | 0 | |
| 1.5 to 2.0 |
| Copper (Cu), % | 0 to 0.050 | |
| 0 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 92.5 to 95.1 |
| Lead (Pb), % | 0 to 0.070 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0.2 to 0.4 |
| Molybdenum (Mo), % | 0 | |
| 0.4 to 0.6 |
| Nickel (Ni), % | 0 to 0.010 | |
| 2.8 to 3.9 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0 to 0.3 |
| Silver (Ag), % | 0 to 0.1 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Tin (Sn), % | 94 to 95.5 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0 to 0.080 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |