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6065 Aluminum vs. S32053 Stainless Steel

6065 aluminum belongs to the aluminum alloys classification, while S32053 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 6065 aluminum and the bottom bar is S32053 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 4.5 to 11
46
Fatigue Strength, MPa 96 to 110
310
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
80
Shear Strength, MPa 190 to 230
510
Tensile Strength: Ultimate (UTS), MPa 310 to 400
730
Tensile Strength: Yield (Proof), MPa 270 to 380
330

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
13
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
33
Density, g/cm3 2.8
8.1
Embodied Carbon, kg CO2/kg material 8.4
6.1
Embodied Energy, MJ/kg 150
83
Embodied Water, L/kg 1200
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 34
270
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 1040
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 31 to 40
25
Strength to Weight: Bending, points 36 to 43
22
Thermal Diffusivity, mm2/s 67
3.3
Thermal Shock Resistance, points 14 to 18
16

Alloy Composition

Aluminum (Al), % 94.4 to 98.2
0
Bismuth (Bi), % 0.5 to 1.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.15
22 to 24
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
41.7 to 48.8
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 6.0
Nickel (Ni), % 0
24 to 26
Nitrogen (N), % 0
0.17 to 0.22
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.4 to 0.8
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.15
0
Residuals, % 0 to 0.15
0