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SAE-AISI 1043 Steel vs. 8090 Aluminum

SAE-AISI 1043 steel belongs to the iron alloys classification, while 8090 aluminum belongs to the aluminum 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 SAE-AISI 1043 steel and the bottom bar is 8090 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
67
Elongation at Break, % 13 to 18
3.5 to 13
Fatigue Strength, MPa 230 to 390
91 to 140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
25
Tensile Strength: Ultimate (UTS), MPa 650 to 710
340 to 490
Tensile Strength: Yield (Proof), MPa 350 to 600
210 to 420

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1460
660
Melting Onset (Solidus), °C 1420
600
Specific Heat Capacity, J/kg-K 470
960
Thermal Conductivity, W/m-K 51
95 to 160
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
20
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
66

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
18
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.6
Embodied Energy, MJ/kg 18
170
Embodied Water, L/kg 46
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
16 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 980
340 to 1330
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 23 to 25
34 to 49
Strength to Weight: Bending, points 21 to 22
39 to 50
Thermal Diffusivity, mm2/s 14
36 to 60
Thermal Shock Resistance, points 21 to 22
15 to 22

Alloy Composition

Aluminum (Al), % 0
93 to 98.4
Carbon (C), % 0.4 to 0.47
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
1.0 to 1.6
Iron (Fe), % 98.4 to 98.9
0 to 0.3
Lithium (Li), % 0
2.2 to 2.7
Magnesium (Mg), % 0
0.6 to 1.3
Manganese (Mn), % 0.7 to 1.0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.16
Residuals, % 0
0 to 0.15