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Solder Alloy 704 vs. ACI-ASTM CK20 Steel

Solder alloy 704 belongs to the otherwise unclassified metals classification, while ACI-ASTM CK20 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 704 and the bottom bar is ACI-ASTM CK20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
150
Elastic (Young's, Tensile) Modulus, GPa 51
200
Elongation at Break, % 30
37
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
78
Tensile Strength: Ultimate (UTS), MPa 55
530

Thermal Properties

Latent Heat of Fusion, J/g 62
310
Melting Completion (Liquidus), °C 240
1400
Melting Onset (Solidus), °C 220
1430
Specific Heat Capacity, J/kg-K 220
480
Thermal Conductivity, W/m-K 50
14
Thermal Expansion, µm/m-K 22
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 15
2.3

Otherwise Unclassified Properties

Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 19
4.4
Embodied Energy, MJ/kg 320
62

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 2.1
19
Strength to Weight: Bending, points 4.3
19
Thermal Diffusivity, mm2/s 30
3.7
Thermal Shock Resistance, points 3.5
13

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 to 0.2
Chromium (Cr), % 0
23 to 27
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
46.7 to 58
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.010
19 to 22
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 94.3 to 95.2
0
Zinc (Zn), % 0 to 0.0010
0