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Solder Alloy 181 vs. AISI 302 Stainless Steel

Solder alloy 181 belongs to the otherwise unclassified metals classification, while AISI 302 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 181 and the bottom bar is AISI 302 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
200
Elongation at Break, % 41
4.5 to 46
Poisson's Ratio 0.44
0.28
Shear Modulus, GPa 6.1
77
Tensile Strength: Ultimate (UTS), MPa 27
580 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 26
280
Melting Completion (Liquidus), °C 310
1420
Melting Onset (Solidus), °C 300
1400
Specific Heat Capacity, J/kg-K 130
480
Thermal Conductivity, W/m-K 24
16
Thermal Expansion, µm/m-K 29
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
2.8

Otherwise Unclassified Properties

Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 6.2
3.0
Embodied Energy, MJ/kg 100
42

Common Calculations

Stiffness to Weight: Axial, points 0.86
14
Stiffness to Weight: Bending, points 7.7
25
Strength to Weight: Axial, points 0.66
21 to 51
Strength to Weight: Bending, points 1.8
20 to 36
Thermal Diffusivity, mm2/s 16
4.4
Thermal Shock Resistance, points 3.8
12 to 31

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
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 0.15
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
67.9 to 75
Lead (Pb), % 96.2 to 98
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0 to 0.010
8.0 to 10
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.0010
0