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Solder Alloy 137 vs. SAE-AISI O7 Steel

Solder alloy 137 belongs to the otherwise unclassified metals classification, while SAE-AISI O7 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is solder alloy 137 and the bottom bar is SAE-AISI O7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 24
190
Poisson's Ratio 0.42
0.29
Shear Modulus, GPa 8.3
73
Tensile Strength: Ultimate (UTS), MPa 34
680 to 2110

Thermal Properties

Latent Heat of Fusion, J/g 33
250
Melting Completion (Liquidus), °C 270
1480
Melting Onset (Solidus), °C 190
1430
Specific Heat Capacity, J/kg-K 150
470
Thermal Conductivity, W/m-K 38
41
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 85
6.0
Density, g/cm3 10
7.9
Embodied Carbon, kg CO2/kg material 6.3
2.3
Embodied Energy, MJ/kg 100
33
Embodied Water, L/kg 660
52

Common Calculations

Stiffness to Weight: Axial, points 1.3
13
Stiffness to Weight: Bending, points 9.2
24
Strength to Weight: Axial, points 0.9
24 to 74
Strength to Weight: Bending, points 2.2
22 to 46
Thermal Diffusivity, mm2/s 25
11
Thermal Shock Resistance, points 3.7
23 to 70

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0.5 to 3.0
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
1.1 to 1.3
Chromium (Cr), % 0
0.35 to 0.85
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
92.9 to 97.6
Lead (Pb), % 75.9 to 80
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0 to 0.010
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.6
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 19.5 to 20.5
0
Tungsten (W), % 0
1.0 to 2.0
Vanadium (V), % 0
0 to 0.4
Zinc (Zn), % 0 to 0.0010
0