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8090 Aluminum vs. S13800 Stainless Steel

8090 aluminum belongs to the aluminum alloys classification, while S13800 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, 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 S13800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
200
Elongation at Break, % 3.5 to 13
11 to 18
Fatigue Strength, MPa 91 to 140
410 to 870
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
77
Tensile Strength: Ultimate (UTS), MPa 340 to 490
980 to 1730
Tensile Strength: Yield (Proof), MPa 210 to 420
660 to 1580

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 190
810
Melting Completion (Liquidus), °C 660
1450
Melting Onset (Solidus), °C 600
1410
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 95 to 160
16
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 66
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 18
15
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.6
3.4
Embodied Energy, MJ/kg 170
46
Embodied Water, L/kg 1160
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
150 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
1090 to 5490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 34 to 49
35 to 61
Strength to Weight: Bending, points 39 to 50
28 to 41
Thermal Diffusivity, mm2/s 36 to 60
4.3
Thermal Shock Resistance, points 15 to 22
33 to 58

Alloy Composition


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Aluminum (Al), % 93 to 98.4
0.9 to 1.4
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.1
12.3 to 13.2
Copper (Cu), % 1.0 to 1.6
0
Iron (Fe), % 0 to 0.3
73.6 to 77.3
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0 to 0.2
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
7.5 to 8.5
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.2
0 to 0.1
Sulfur (S), % 0
0 to 0.0080
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0 to 0.15
0