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Solder Alloy 703 vs. ASTM A387 Grade 22 Steel

Solder alloy 703 belongs to the otherwise unclassified metals classification, while ASTM A387 grade 22 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 ASTM A387 grade 22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 15
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 51
190
Elongation at Break, % 35
21
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
74
Tensile Strength: Ultimate (UTS), MPa 57
480 to 600

Thermal Properties

Latent Heat of Fusion, J/g 61
260
Melting Completion (Liquidus), °C 220
1470
Melting Onset (Solidus), °C 220
1430
Specific Heat Capacity, J/kg-K 220
470
Thermal Conductivity, W/m-K 55
40
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 17
8.6

Otherwise Unclassified Properties

Density, g/cm3 7.4
7.9
Embodied Carbon, kg CO2/kg material 18
1.7
Embodied Energy, MJ/kg 300
23

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 2.1
17 to 21
Strength to Weight: Bending, points 4.4
17 to 20
Thermal Diffusivity, mm2/s 33
11
Thermal Shock Resistance, points 3.7
14 to 17

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
0.050 to 0.15
Chromium (Cr), % 0
2.0 to 2.5
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
95.1 to 96.8
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 3.3 to 3.7
0
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 95.8 to 96.7
0
Zinc (Zn), % 0 to 0.0010
0