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Solder Alloy 704 vs. S35045 Stainless Steel

Solder alloy 704 belongs to the otherwise unclassified metals classification, while S35045 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is S35045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
200
Elongation at Break, % 30
39
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
78
Tensile Strength: Ultimate (UTS), MPa 55
540

Thermal Properties

Latent Heat of Fusion, J/g 62
310
Melting Completion (Liquidus), °C 240
1390
Melting Onset (Solidus), °C 220
1340
Specific Heat Capacity, J/kg-K 220
480
Thermal Conductivity, W/m-K 50
12
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 15
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.0
Embodied Carbon, kg CO2/kg material 19
5.8
Embodied Energy, MJ/kg 320
83

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 2.1
19
Strength to Weight: Bending, points 4.3
19
Thermal Diffusivity, mm2/s 30
3.2
Thermal Shock Resistance, points 3.5
12

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0.15 to 0.6
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
0.060 to 0.1
Chromium (Cr), % 0
25 to 29
Copper (Cu), % 0 to 0.050
0 to 0.75
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
29.4 to 42.6
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.010
32 to 37
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 94.3 to 95.2
0
Titanium (Ti), % 0
0.15 to 0.6
Zinc (Zn), % 0 to 0.0010
0