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8090 Aluminum vs. SAE-AISI 50B60 Steel

8090 aluminum belongs to the aluminum alloys classification, while SAE-AISI 50B60 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 SAE-AISI 50B60 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
190
Elongation at Break, % 3.5 to 13
12 to 20
Fatigue Strength, MPa 91 to 140
240 to 330
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
72
Tensile Strength: Ultimate (UTS), MPa 340 to 490
610 to 630
Tensile Strength: Yield (Proof), MPa 210 to 420
350 to 530

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 190
410
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
45
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 66
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.0
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.6
1.4
Embodied Energy, MJ/kg 170
19
Embodied Water, L/kg 1160
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
71 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
330 to 750
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 34 to 49
22 to 23
Strength to Weight: Bending, points 39 to 50
20 to 21
Thermal Diffusivity, mm2/s 36 to 60
12
Thermal Shock Resistance, points 15 to 22
20

Alloy Composition

Aluminum (Al), % 93 to 98.4
0
Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0
0.56 to 0.64
Chromium (Cr), % 0 to 0.1
0.4 to 0.6
Copper (Cu), % 1.0 to 1.6
0
Iron (Fe), % 0 to 0.3
97.3 to 98.1
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0.75 to 1.0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
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