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Solder Alloy 131 vs. SAE-AISI M4 Steel

Solder alloy 131 belongs to the otherwise unclassified metals classification, while SAE-AISI M4 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is solder alloy 131 and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
200
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 14
76
Tensile Strength: Ultimate (UTS), MPa 31
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 46
260
Melting Completion (Liquidus), °C 180
1610
Melting Onset (Solidus), °C 180
1560
Specific Heat Capacity, J/kg-K 190
440
Thermal Conductivity, W/m-K 55
25
Thermal Expansion, µm/m-K 25
12

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 11
14
Embodied Energy, MJ/kg 180
210
Embodied Water, L/kg 940
110

Common Calculations

Stiffness to Weight: Axial, points 2.4
13
Stiffness to Weight: Bending, points 13
23
Strength to Weight: Axial, points 1.0
26 to 72
Strength to Weight: Bending, points 2.5
23 to 45
Thermal Diffusivity, mm2/s 33
6.9
Thermal Shock Resistance, points 2.4
24 to 68

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0.2 to 0.5
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
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Copper (Cu), % 0 to 0.080
0 to 0.25
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
75.9 to 81.4
Lead (Pb), % 35.5 to 37.3
0
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.3 to 5.5
Nickel (Ni), % 0 to 0.010
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 62.5 to 63.5
0
Tungsten (W), % 0
5.3 to 6.5
Vanadium (V), % 0
3.8 to 4.5
Zinc (Zn), % 0 to 0.0010
0