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EN AC-71100 Aluminum vs. SAE-AISI P4 Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while SAE-AISI P4 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 P4 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
390 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 490
260
Melting Completion (Liquidus), °C 580
1460
Melting Onset (Solidus), °C 520
1420
Specific Heat Capacity, J/kg-K 860
470
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 97
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.4
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.8
Embodied Energy, MJ/kg 140
23
Embodied Water, L/kg 1010
68

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 25
14 to 70
Strength to Weight: Bending, points 31
15 to 45
Thermal Shock Resistance, points 12
13 to 64

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0
4.0 to 5.3
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.3
92.3 to 95.3
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0.2 to 0.6
Molybdenum (Mo), % 0
0.4 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 7.5 to 9.5
0.1 to 0.4
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