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6182 Aluminum vs. SAE-AISI 1084 Steel

6182 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1084 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 6182 aluminum and the bottom bar is SAE-AISI 1084 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.8 to 13
11
Fatigue Strength, MPa 63 to 99
320 to 370
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 140 to 190
470 to 550
Tensile Strength: Ultimate (UTS), MPa 230 to 320
780 to 930
Tensile Strength: Yield (Proof), MPa 130 to 270
510 to 600

Thermal Properties

Latent Heat of Fusion, J/g 410
240
Maximum Temperature: Mechanical, °C 190
400
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 600
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
51
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 130
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 8.4
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1170
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
81 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 520
700 to 960
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 23 to 32
28 to 33
Strength to Weight: Bending, points 30 to 38
24 to 27
Thermal Diffusivity, mm2/s 65
14
Thermal Shock Resistance, points 10 to 14
25 to 30

Alloy Composition

Aluminum (Al), % 95 to 97.9
0
Carbon (C), % 0
0.8 to 0.93
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
98.1 to 98.6
Magnesium (Mg), % 0.7 to 1.2
0
Manganese (Mn), % 0.5 to 1.0
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.9 to 1.3
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0 to 0.15
0