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EN AC-71100 Aluminum vs. SAE-AISI A2 Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while SAE-AISI A2 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 SAE-AISI A2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
74
Tensile Strength: Ultimate (UTS), MPa 260
710 to 2040

Thermal Properties

Latent Heat of Fusion, J/g 490
260
Melting Completion (Liquidus), °C 580
1450
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 860
470
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 97
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
5.5
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
2.7
Embodied Energy, MJ/kg 140
38
Embodied Water, L/kg 1010
73

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 25
25 to 73
Strength to Weight: Bending, points 31
23 to 46
Thermal Shock Resistance, points 12
25 to 71

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Carbon (C), % 0
1.0 to 1.1
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.3
89.4 to 93.3
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 7.5 to 9.5
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0.15 to 0.5
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0