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Solder Alloy 124 vs. SAE-AISI H21 Steel

Solder alloy 124 belongs to the otherwise unclassified metals classification, while SAE-AISI H21 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is solder alloy 124 and the bottom bar is SAE-AISI H21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
200
Poisson's Ratio 0.44
0.29
Shear Modulus, GPa 5.8
76
Tensile Strength: Ultimate (UTS), MPa 27
720 to 1790

Thermal Properties

Latent Heat of Fusion, J/g 24
250
Melting Completion (Liquidus), °C 330
1630
Melting Onset (Solidus), °C 320
1580
Specific Heat Capacity, J/kg-K 130
440
Thermal Conductivity, W/m-K 22
27
Thermal Expansion, µm/m-K 29
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
23
Density, g/cm3 11
8.5
Embodied Carbon, kg CO2/kg material 4.1
4.5
Embodied Energy, MJ/kg 68
68
Embodied Water, L/kg 470
72

Common Calculations

Stiffness to Weight: Axial, points 0.83
13
Stiffness to Weight: Bending, points 7.6
23
Strength to Weight: Axial, points 0.65
23 to 58
Strength to Weight: Bending, points 1.8
21 to 38
Thermal Diffusivity, mm2/s 15
7.1
Thermal Shock Resistance, points 3.9
24 to 59

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
0.28 to 0.36
Chromium (Cr), % 0
3.0 to 3.8
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
87.6 to 93.8
Lead (Pb), % 97.2 to 98.2
0
Manganese (Mn), % 0
0.15 to 0.4
Nickel (Ni), % 0 to 0.010
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.15 to 0.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.8 to 2.2
0
Tungsten (W), % 0
8.5 to 10
Vanadium (V), % 0
0.3 to 0.6
Zinc (Zn), % 0 to 0.0010
0