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3105 Aluminum vs. SAE-AISI T6 Steel

3105 aluminum belongs to the aluminum alloys classification, while SAE-AISI T6 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, 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 3105 aluminum and the bottom bar is SAE-AISI T6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 120 to 240
880 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Melting Completion (Liquidus), °C 660
1830
Melting Onset (Solidus), °C 640
1770
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 170
18
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
70
Density, g/cm3 2.8
9.5
Embodied Carbon, kg CO2/kg material 8.2
11
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1180
160

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 50
21
Strength to Weight: Axial, points 12 to 24
26 to 63
Strength to Weight: Bending, points 20 to 31
21 to 39
Thermal Diffusivity, mm2/s 68
4.7
Thermal Shock Resistance, points 5.2 to 11
26 to 64

Alloy Composition

Aluminum (Al), % 96 to 99.5
0
Carbon (C), % 0
0.75 to 0.85
Chromium (Cr), % 0 to 0.2
4.0 to 4.8
Cobalt (Co), % 0
11 to 13
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 0 to 0.7
55.9 to 63.5
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.6
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
18.5 to 21
Vanadium (V), % 0
1.5 to 2.1
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0 to 0.15
0

Comparable Variants