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Solder Alloy 124 vs. ASTM A356 Grade 5

Solder alloy 124 belongs to the otherwise unclassified metals classification, while ASTM A356 grade 5 belongs to the iron alloys. There are 24 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 124 and the bottom bar is ASTM A356 grade 5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
190
Elongation at Break, % 46
25
Poisson's Ratio 0.44
0.29
Shear Modulus, GPa 5.8
73
Tensile Strength: Ultimate (UTS), MPa 27
550

Thermal Properties

Latent Heat of Fusion, J/g 24
250
Melting Completion (Liquidus), °C 330
1470
Melting Onset (Solidus), °C 320
1420
Specific Heat Capacity, J/kg-K 130
470
Thermal Conductivity, W/m-K 22
49
Thermal Expansion, µm/m-K 29
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.6
Density, g/cm3 11
7.9
Embodied Carbon, kg CO2/kg material 4.1
1.5
Embodied Energy, MJ/kg 68
20
Embodied Water, L/kg 470
49

Common Calculations

Stiffness to Weight: Axial, points 0.83
13
Stiffness to Weight: Bending, points 7.6
24
Strength to Weight: Axial, points 0.65
20
Strength to Weight: Bending, points 1.8
19
Thermal Diffusivity, mm2/s 15
13
Thermal Shock Resistance, points 3.9
16

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 0.25
Chromium (Cr), % 0
0.4 to 0.7
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
97.1 to 99.2
Lead (Pb), % 97.2 to 98.2
0
Manganese (Mn), % 0
0 to 0.7
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.6
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