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Solder Alloy 704 vs. AWS E80C-W2

Solder alloy 704 belongs to the otherwise unclassified metals classification, while AWS E80C-W2 belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is AWS E80C-W2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
190
Elongation at Break, % 30
25
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
72
Tensile Strength: Ultimate (UTS), MPa 55
620

Thermal Properties

Latent Heat of Fusion, J/g 62
260
Melting Completion (Liquidus), °C 240
1450
Melting Onset (Solidus), °C 220
1410
Specific Heat Capacity, J/kg-K 220
470
Thermal Conductivity, W/m-K 50
39
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 15
8.7

Otherwise Unclassified Properties

Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 19
1.5
Embodied Energy, MJ/kg 320
20

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 2.1
22
Strength to Weight: Bending, points 4.3
21
Thermal Diffusivity, mm2/s 30
10
Thermal Shock Resistance, points 3.5
18

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 0.12
Chromium (Cr), % 0
0.45 to 0.7
Copper (Cu), % 0 to 0.050
0.3 to 0.75
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
94.9 to 98
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0.5 to 1.3
Nickel (Ni), % 0 to 0.010
0.4 to 0.8
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.35 to 0.8
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 94.3 to 95.2
0
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.5