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Solder Alloy 702 vs. S64512 Stainless Steel

Solder alloy 702 belongs to the otherwise unclassified metals classification, while S64512 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is solder alloy 702 and the bottom bar is S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
200
Elongation at Break, % 21
17
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
76
Tensile Strength: Ultimate (UTS), MPa 53
1140

Thermal Properties

Latent Heat of Fusion, J/g 61
270
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 62
28
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 18
4.1

Otherwise Unclassified Properties

Density, g/cm3 7.4
7.8
Embodied Carbon, kg CO2/kg material 17
3.3
Embodied Energy, MJ/kg 290
47

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 2.0
40
Strength to Weight: Bending, points 4.2
31
Thermal Diffusivity, mm2/s 38
7.5
Thermal Shock Resistance, points 3.4
42

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
0.080 to 0.15
Chromium (Cr), % 0
11 to 12.5
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
80.6 to 84.7
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0.5 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0 to 0.010
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.35
Silver (Ag), % 2.8 to 3.2
0
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 96.3 to 97.2
0
Vanadium (V), % 0
0.25 to 0.4
Zinc (Zn), % 0 to 0.0010
0