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Solder Alloy 703 vs. SAE-AISI 1040 Steel

Solder alloy 703 belongs to the otherwise unclassified metals classification, while SAE-AISI 1040 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 703 and the bottom bar is SAE-AISI 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 15
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 51
190
Elongation at Break, % 35
13 to 20
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
73
Tensile Strength: Ultimate (UTS), MPa 57
570 to 640

Thermal Properties

Latent Heat of Fusion, J/g 61
250
Melting Completion (Liquidus), °C 220
1460
Melting Onset (Solidus), °C 220
1420
Specific Heat Capacity, J/kg-K 220
470
Thermal Conductivity, W/m-K 55
51
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
8.0

Otherwise Unclassified Properties

Density, g/cm3 7.4
7.8
Embodied Carbon, kg CO2/kg material 18
1.4
Embodied Energy, MJ/kg 300
18

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 2.1
20 to 23
Strength to Weight: Bending, points 4.4
19 to 21
Thermal Diffusivity, mm2/s 33
14
Thermal Shock Resistance, points 3.7
18 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
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
0.37 to 0.44
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
98.6 to 99.03
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0.6 to 0.9
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.040
Silver (Ag), % 3.3 to 3.7
0
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 95.8 to 96.7
0
Zinc (Zn), % 0 to 0.0010
0