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Solder Alloy 201 vs. SAE-AISI A9 Steel

Solder alloy 201 belongs to the otherwise unclassified metals classification, while SAE-AISI A9 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is solder alloy 201 and the bottom bar is SAE-AISI A9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 50
190
Poisson's Ratio 0.35
0.29
Shear Modulus, GPa 19
74
Tensile Strength: Ultimate (UTS), MPa 41
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 64
280
Melting Completion (Liquidus), °C 240
1460
Melting Onset (Solidus), °C 240
1410
Specific Heat Capacity, J/kg-K 220
470
Thermal Conductivity, W/m-K 28
35
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 15
9.2

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.8
Embodied Carbon, kg CO2/kg material 15
4.7
Embodied Energy, MJ/kg 250
70
Embodied Water, L/kg 1320
82

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 1.6
28 to 73
Strength to Weight: Bending, points 3.6
24 to 46
Thermal Diffusivity, mm2/s 17
9.6
Thermal Shock Resistance, points 2.7
25 to 66

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 4.5 to 5.5
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
0.45 to 0.55
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0 to 0.050
0 to 0.25
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
87 to 90.5
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 0 to 0.010
1.3 to 1.8
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.0 to 1.2
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 94 to 95.5
0
Vanadium (V), % 0
0.8 to 1.4
Zinc (Zn), % 0 to 0.0010
0