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ACI-ASTM CF20 Steel vs. Solder Alloy 702

ACI-ASTM CF20 steel belongs to the iron alloys classification, while solder alloy 702 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF20 steel and the bottom bar is solder alloy 702.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
51
Elongation at Break, % 50
21
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 77
19
Tensile Strength: Ultimate (UTS), MPa 530
53

Thermal Properties

Latent Heat of Fusion, J/g 300
61
Melting Completion (Liquidus), °C 1420
220
Melting Onset (Solidus), °C 1410
220
Specific Heat Capacity, J/kg-K 480
220
Thermal Conductivity, W/m-K 16
62
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
15
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
18

Otherwise Unclassified Properties

Density, g/cm3 7.8
7.4
Embodied Carbon, kg CO2/kg material 3.1
17
Embodied Energy, MJ/kg 44
290

Common Calculations

Stiffness to Weight: Axial, points 14
3.8
Stiffness to Weight: Bending, points 25
17
Strength to Weight: Axial, points 19
2.0
Strength to Weight: Bending, points 19
4.2
Thermal Diffusivity, mm2/s 4.3
38
Thermal Shock Resistance, points 11
3.4

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 64.2 to 74
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 8.0 to 11
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
2.8 to 3.2
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
96.3 to 97.2
Zinc (Zn), % 0
0 to 0.0010