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8090 Aluminum vs. S66286 Stainless Steel

8090 aluminum belongs to the aluminum alloys classification, while S66286 stainless steel belongs to the iron alloys. There are 29 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 8090 aluminum and the bottom bar is S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
190
Elongation at Break, % 3.5 to 13
17 to 40
Fatigue Strength, MPa 91 to 140
240 to 410
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
75
Tensile Strength: Ultimate (UTS), MPa 340 to 490
620 to 1020
Tensile Strength: Yield (Proof), MPa 210 to 420
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 190
920
Melting Completion (Liquidus), °C 660
1430
Melting Onset (Solidus), °C 600
1370
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 95 to 160
15
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 66
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 18
26
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.6
6.0
Embodied Energy, MJ/kg 170
87
Embodied Water, L/kg 1160
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
150 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
190 to 1150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 34 to 49
22 to 36
Strength to Weight: Bending, points 39 to 50
20 to 28
Thermal Diffusivity, mm2/s 36 to 60
4.0
Thermal Shock Resistance, points 15 to 22
13 to 22

Alloy Composition


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Aluminum (Al), % 93 to 98.4
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
13.5 to 16
Copper (Cu), % 1.0 to 1.6
0
Iron (Fe), % 0 to 0.3
49.1 to 59.5
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
1.9 to 2.4
Vanadium (V), % 0
0.1 to 0.5
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0 to 0.15
0