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AISI 439 Stainless Steel vs. Solder Alloy 124

AISI 439 stainless steel belongs to the iron alloys classification, while solder alloy 124 belongs to the otherwise unclassified metals. There are 24 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 AISI 439 stainless steel and the bottom bar is solder alloy 124.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
17
Elongation at Break, % 23
46
Poisson's Ratio 0.28
0.44
Shear Modulus, GPa 77
5.8
Tensile Strength: Ultimate (UTS), MPa 490
27

Thermal Properties

Latent Heat of Fusion, J/g 280
24
Melting Completion (Liquidus), °C 1510
330
Melting Onset (Solidus), °C 1430
320
Specific Heat Capacity, J/kg-K 480
130
Thermal Conductivity, W/m-K 25
22
Thermal Expansion, µm/m-K 11
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
7.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
70
Density, g/cm3 7.7
11
Embodied Carbon, kg CO2/kg material 2.3
4.1
Embodied Energy, MJ/kg 34
68
Embodied Water, L/kg 120
470

Common Calculations

Stiffness to Weight: Axial, points 14
0.83
Stiffness to Weight: Bending, points 25
7.6
Strength to Weight: Axial, points 18
0.65
Strength to Weight: Bending, points 18
1.8
Thermal Diffusivity, mm2/s 6.7
15
Thermal Shock Resistance, points 16
3.9

Alloy Composition

Aluminum (Al), % 0 to 0.15
0 to 0.0010
Antimony (Sb), % 0
0 to 0.12
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 77.1 to 82.8
0 to 0.020
Lead (Pb), % 0
97.2 to 98.2
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.5
0 to 0.010
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.8 to 2.2
Titanium (Ti), % 0.2 to 1.1
0
Zinc (Zn), % 0
0 to 0.0010