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6066 Aluminum vs. S24000 Stainless Steel

6066 aluminum belongs to the aluminum alloys classification, while S24000 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 6066 aluminum and the bottom bar is S24000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 7.8 to 17
39
Fatigue Strength, MPa 94 to 130
370
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 95 to 240
530
Tensile Strength: Ultimate (UTS), MPa 160 to 400
770
Tensile Strength: Yield (Proof), MPa 93 to 360
430

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 170
910
Melting Completion (Liquidus), °C 650
1390
Melting Onset (Solidus), °C 560
1350
Specific Heat Capacity, J/kg-K 890
480
Thermal Expansion, µm/m-K 23
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
7.6
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 52
260
Resilience: Unit (Modulus of Resilience), kJ/m3 61 to 920
470
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 16 to 39
28
Strength to Weight: Bending, points 23 to 43
24
Thermal Shock Resistance, points 6.9 to 17
16

Alloy Composition

Aluminum (Al), % 93 to 97
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.4
17 to 19
Copper (Cu), % 0.7 to 1.2
0
Iron (Fe), % 0 to 0.5
61.5 to 69
Magnesium (Mg), % 0.8 to 1.4
0
Manganese (Mn), % 0.6 to 1.1
11.5 to 14.5
Nickel (Ni), % 0
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0.9 to 1.8
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0