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1100A Aluminum vs. SAE-AISI 1090 Steel

1100A aluminum belongs to the aluminum alloys classification, while SAE-AISI 1090 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 1100A aluminum and the bottom bar is SAE-AISI 1090 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 4.5 to 34
11
Fatigue Strength, MPa 35 to 74
320 to 380
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 59 to 99
470 to 570
Tensile Strength: Ultimate (UTS), MPa 89 to 170
790 to 950
Tensile Strength: Yield (Proof), MPa 29 to 150
520 to 610

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 640
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
50
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 200
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.4 to 23
82 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 5.9 to 150
730 to 1000
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 9.1 to 17
28 to 34
Strength to Weight: Bending, points 16 to 25
24 to 27
Thermal Diffusivity, mm2/s 93
13
Thermal Shock Resistance, points 4.0 to 7.6
25 to 31

Alloy Composition

Aluminum (Al), % 99 to 100
0
Carbon (C), % 0
0.85 to 1.0
Copper (Cu), % 0.050 to 0.2
0
Iron (Fe), % 0 to 1.0
98 to 98.6
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.050
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0