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EN AC-71100 Aluminum vs. ACI-ASTM CB7Cu-2 Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CB7Cu-2 steel belongs to the iron alloys. There are 27 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 EN AC-71100 aluminum and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
300 to 420
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
5.7 to 11
Fatigue Strength, MPa 150
420 to 590
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 260
960 to 1350
Tensile Strength: Yield (Proof), MPa 230
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 490
280
Melting Completion (Liquidus), °C 580
1430
Melting Onset (Solidus), °C 520
1380
Specific Heat Capacity, J/kg-K 860
480
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 97
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
2.6
Embodied Energy, MJ/kg 140
38
Embodied Water, L/kg 1010
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1510 to 3600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 25
34 to 48
Strength to Weight: Bending, points 31
28 to 35
Thermal Shock Resistance, points 12
32 to 45

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
14 to 15.5
Copper (Cu), % 0 to 0.1
2.5 to 3.2
Iron (Fe), % 0 to 0.3
73.6 to 79
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0 to 0.7
Nickel (Ni), % 0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 7.5 to 9.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0