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Solder Alloy 151 vs. ASTM A369 Grade FP9

Solder alloy 151 belongs to the otherwise unclassified metals classification, while ASTM A369 grade FP9 belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 151 and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 39
190
Elongation at Break, % 37
20
Poisson's Ratio 0.37
0.28
Shear Modulus, GPa 14
75
Tensile Strength: Ultimate (UTS), MPa 46
470

Thermal Properties

Latent Heat of Fusion, J/g 47
270
Melting Completion (Liquidus), °C 150
1450
Melting Onset (Solidus), °C 150
1410
Specific Heat Capacity, J/kg-K 190
480
Thermal Conductivity, W/m-K 44
26
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 10
10

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 9.2
2.0
Embodied Energy, MJ/kg 160
28
Embodied Water, L/kg 920
87

Common Calculations

Stiffness to Weight: Axial, points 2.5
14
Stiffness to Weight: Bending, points 13
25
Strength to Weight: Axial, points 1.4
17
Strength to Weight: Bending, points 3.2
17
Thermal Diffusivity, mm2/s 26
6.9
Thermal Shock Resistance, points 3.2
13

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), % 17.5 to 18.5
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
8.0 to 10
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
87.1 to 90.3
Lead (Pb), % 30.3 to 33
0
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.5 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 49.5 to 50.5
0
Zinc (Zn), % 0 to 0.0010
0