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Solder Alloy 124 vs. S21800 Stainless Steel

Solder alloy 124 belongs to the otherwise unclassified metals classification, while S21800 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is solder alloy 124 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
190
Elongation at Break, % 46
40
Poisson's Ratio 0.44
0.28
Shear Modulus, GPa 5.8
75
Tensile Strength: Ultimate (UTS), MPa 27
740

Thermal Properties

Latent Heat of Fusion, J/g 24
340
Melting Completion (Liquidus), °C 330
1360
Melting Onset (Solidus), °C 320
1310
Specific Heat Capacity, J/kg-K 130
500
Thermal Expansion, µm/m-K 29
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
15
Density, g/cm3 11
7.5
Embodied Carbon, kg CO2/kg material 4.1
3.1
Embodied Energy, MJ/kg 68
45
Embodied Water, L/kg 470
150

Common Calculations

Stiffness to Weight: Axial, points 0.83
14
Stiffness to Weight: Bending, points 7.6
26
Strength to Weight: Axial, points 0.65
27
Strength to Weight: Bending, points 1.8
24
Thermal Shock Resistance, points 3.9
17

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.12
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 0.1
Chromium (Cr), % 0
16 to 18
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
59.1 to 65.4
Lead (Pb), % 97.2 to 98.2
0
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 0 to 0.010
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0
3.5 to 4.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.8 to 2.2
0
Zinc (Zn), % 0 to 0.0010
0