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3105 Aluminum vs. ACI-ASTM CC50 Steel

3105 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CC50 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, 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 ACI-ASTM CC50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 29 to 67
210
Elastic (Young's, Tensile) Modulus, GPa 69
200
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 120 to 240
430

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 660
1420
Melting Onset (Solidus), °C 640
1370
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 170
17
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 2.8
7.6
Embodied Carbon, kg CO2/kg material 8.2
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1180
170

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
26
Strength to Weight: Axial, points 12 to 24
16
Strength to Weight: Bending, points 20 to 31
17
Thermal Diffusivity, mm2/s 68
4.5
Thermal Shock Resistance, points 5.2 to 11
14

Alloy Composition

Aluminum (Al), % 96 to 99.5
0
Carbon (C), % 0
0 to 0.5
Chromium (Cr), % 0 to 0.2
26 to 30
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.7
62.9 to 74
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Nickel (Ni), % 0
0 to 4.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0 to 0.15
0