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Solder Alloy 121 vs. SAE-AISI 9310 Steel

Solder alloy 121 belongs to the otherwise unclassified metals classification, while SAE-AISI 9310 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is solder alloy 121 and the bottom bar is SAE-AISI 9310 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 11
540 to 610
Elastic (Young's, Tensile) Modulus, GPa 21
190
Elongation at Break, % 25
17 to 19
Poisson's Ratio 0.43
0.29
Shear Modulus, GPa 7.5
73
Tensile Strength: Ultimate (UTS), MPa 32
820 to 910

Thermal Properties

Latent Heat of Fusion, J/g 29
250
Melting Completion (Liquidus), °C 290
1460
Melting Onset (Solidus), °C 230
1420
Specific Heat Capacity, J/kg-K 140
470
Thermal Conductivity, W/m-K 31
48
Thermal Expansion, µm/m-K 28
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 80
4.4
Density, g/cm3 11
7.9
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 93
24
Embodied Water, L/kg 580
57

Common Calculations

Stiffness to Weight: Axial, points 1.1
13
Stiffness to Weight: Bending, points 8.6
24
Strength to Weight: Axial, points 0.84
29 to 32
Strength to Weight: Bending, points 2.1
25 to 27
Thermal Diffusivity, mm2/s 20
13
Thermal Shock Resistance, points 3.9
24 to 27

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0.080 to 0.13
Chromium (Cr), % 0
1.0 to 1.4
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
93.8 to 95.2
Lead (Pb), % 83.4 to 85.5
0
Manganese (Mn), % 0
0.45 to 0.65
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0 to 0.010
3.0 to 3.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0.2 to 0.35
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.012
Tin (Sn), % 14.5 to 15.5
0
Zinc (Zn), % 0 to 0.0010
0