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Solder Alloy 103 vs. S20431 Stainless Steel

Solder alloy 103 belongs to the otherwise unclassified metals classification, while S20431 stainless steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is solder alloy 103 and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
200
Elongation at Break, % 47
46
Poisson's Ratio 0.39
0.28
Shear Modulus, GPa 13
76
Tensile Strength: Ultimate (UTS), MPa 52
710

Thermal Properties

Latent Heat of Fusion, J/g 45
280
Melting Completion (Liquidus), °C 190
1400
Melting Onset (Solidus), °C 180
1360
Specific Heat Capacity, J/kg-K 180
480
Thermal Conductivity, W/m-K 50
15
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 10
2.5
Embodied Energy, MJ/kg 180
36
Embodied Water, L/kg 910
140

Common Calculations

Stiffness to Weight: Axial, points 2.3
14
Stiffness to Weight: Bending, points 12
25
Strength to Weight: Axial, points 1.6
25
Strength to Weight: Bending, points 3.5
23
Thermal Diffusivity, mm2/s 30
4.0
Thermal Shock Resistance, points 4.3
15

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
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
17 to 18
Copper (Cu), % 0 to 0.080
1.5 to 3.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
66.1 to 74.4
Lead (Pb), % 38.8 to 40.5
0
Manganese (Mn), % 0
5.0 to 7.0
Nickel (Ni), % 0 to 0.010
2.0 to 4.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 59.5 to 60.5
0
Zinc (Zn), % 0 to 0.0010
0