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6106 Aluminum vs. S32654 Stainless Steel

6106 aluminum belongs to the aluminum alloys classification, while S32654 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 6106 aluminum and the bottom bar is S32654 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Elongation at Break, % 9.1
45
Fatigue Strength, MPa 88
450
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
82
Shear Strength, MPa 170
590
Tensile Strength: Ultimate (UTS), MPa 290
850
Tensile Strength: Yield (Proof), MPa 220
490

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 660
1450
Melting Onset (Solidus), °C 610
1410
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 190
11
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 160
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
34
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.3
6.4
Embodied Energy, MJ/kg 150
87
Embodied Water, L/kg 1190
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
330
Resilience: Unit (Modulus of Resilience), kJ/m3 370
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 29
29
Strength to Weight: Bending, points 35
25
Thermal Diffusivity, mm2/s 78
2.9
Thermal Shock Resistance, points 13
19

Alloy Composition

Aluminum (Al), % 97.2 to 99.3
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0 to 0.2
24 to 25
Copper (Cu), % 0 to 0.25
0.3 to 0.6
Iron (Fe), % 0 to 0.35
38.3 to 45.3
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.050 to 0.2
2.0 to 4.0
Molybdenum (Mo), % 0
7.0 to 8.0
Nickel (Ni), % 0
21 to 23
Nitrogen (N), % 0
0.45 to 0.55
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.3 to 0.6
0 to 0.5
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0