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A380.0 Aluminum vs. SAE-AISI 8620 Steel

A380.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 8620 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 A380.0 aluminum and the bottom bar is SAE-AISI 8620 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
150 to 210
Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 3.3
13 to 31
Fatigue Strength, MPa 140
270 to 360
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 190
340 to 420
Tensile Strength: Ultimate (UTS), MPa 290
520 to 690
Tensile Strength: Yield (Proof), MPa 160
360 to 570

Thermal Properties

Latent Heat of Fusion, J/g 510
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 590
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 96
39
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 78
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.6
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.5
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 1040
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.3
86 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 180
340 to 880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
24
Strength to Weight: Axial, points 28
18 to 24
Strength to Weight: Bending, points 34
18 to 22
Thermal Diffusivity, mm2/s 38
10
Thermal Shock Resistance, points 13
15 to 20

Alloy Composition

Aluminum (Al), % 80.3 to 89.5
0
Carbon (C), % 0
0.18 to 0.23
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 1.3
96.9 to 98
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.7 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0 to 0.5
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 7.5 to 9.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0