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Solder Alloy 401 vs. AWS E240

Solder alloy 401 belongs to the otherwise unclassified metals classification, while AWS E240 belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is solder alloy 401 and the bottom bar is AWS E240.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 50
200
Elongation at Break, % 21
17
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
77
Tensile Strength: Ultimate (UTS), MPa 29
770

Thermal Properties

Latent Heat of Fusion, J/g 60
290
Melting Completion (Liquidus), °C 230
1390
Melting Onset (Solidus), °C 230
1350
Specific Heat Capacity, J/kg-K 220
480
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 22
15

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.7
Embodied Carbon, kg CO2/kg material 15
3.0
Embodied Energy, MJ/kg 250
42
Embodied Water, L/kg 1200
160

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 1.1
28
Strength to Weight: Bending, points 2.9
24
Thermal Diffusivity, mm2/s 40
3.9
Thermal Shock Resistance, points 1.9
19

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
0 to 0.060
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.5 to 0.9
0 to 0.75
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
58.6 to 68.4
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
10.5 to 13.5
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0 to 0.010
4.0 to 6.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 98.5 to 99.5
0
Zinc (Zn), % 0 to 0.0010
0