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Solder Alloy 131 vs. SAE-AISI A8 Steel

Solder alloy 131 belongs to the otherwise unclassified metals classification, while SAE-AISI A8 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is solder alloy 131 and the bottom bar is SAE-AISI A8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
190
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 14
74
Tensile Strength: Ultimate (UTS), MPa 31
700 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 46
270
Melting Completion (Liquidus), °C 180
1480
Melting Onset (Solidus), °C 180
1430
Specific Heat Capacity, J/kg-K 190
470
Thermal Conductivity, W/m-K 55
37
Thermal Expansion, µm/m-K 25
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 12
9.5

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.9
Embodied Carbon, kg CO2/kg material 11
2.3
Embodied Energy, MJ/kg 180
31
Embodied Water, L/kg 940
73

Common Calculations

Stiffness to Weight: Axial, points 2.4
14
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.0
25 to 68
Strength to Weight: Bending, points 2.5
22 to 44
Thermal Diffusivity, mm2/s 33
9.9
Thermal Shock Resistance, points 2.4
22 to 62

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0.2 to 0.5
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
0.5 to 0.6
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0 to 0.080
0 to 0.25
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
88.5 to 91.9
Lead (Pb), % 35.5 to 37.3
0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
1.2 to 1.7
Nickel (Ni), % 0 to 0.010
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.75 to 1.1
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 62.5 to 63.5
0
Tungsten (W), % 0
1.0 to 1.5
Zinc (Zn), % 0 to 0.0010
0