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Solder Alloy 104 vs. SAE-AISI 81B45 Steel

Solder alloy 104 belongs to the otherwise unclassified metals classification, while SAE-AISI 81B45 steel belongs to the iron alloys. There are 23 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 104 and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
190
Elongation at Break, % 46
12 to 24
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 13
73
Tensile Strength: Ultimate (UTS), MPa 51
540 to 670

Thermal Properties

Latent Heat of Fusion, J/g 45
250
Melting Completion (Liquidus), °C 190
1460
Melting Onset (Solidus), °C 180
1420
Specific Heat Capacity, J/kg-K 180
470
Thermal Conductivity, W/m-K 50
40
Thermal Expansion, µm/m-K 25
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.3

Otherwise Unclassified Properties

Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 10
1.5
Embodied Energy, MJ/kg 180
20
Embodied Water, L/kg 900
49

Common Calculations

Stiffness to Weight: Axial, points 2.3
13
Stiffness to Weight: Bending, points 12
24
Strength to Weight: Axial, points 1.6
19 to 24
Strength to Weight: Bending, points 3.4
19 to 22
Thermal Diffusivity, mm2/s 30
11
Thermal Shock Resistance, points 4.0
17 to 21

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.050
0
Boron (B), % 0
0.00050 to 0.0030
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.43 to 0.48
Chromium (Cr), % 0
0.35 to 0.55
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
97 to 98
Lead (Pb), % 39 to 40.5
0
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0 to 0.010
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 59.5 to 60.5
0
Zinc (Zn), % 0 to 0.0010
0