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4004 Aluminum vs. EN 1.7177 Steel

4004 aluminum belongs to the aluminum alloys classification, while EN 1.7177 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 4004 aluminum and the bottom bar is EN 1.7177 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 110
660 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 540
250
Maximum Temperature: Mechanical, °C 160
420
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 560
1410
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 130
47
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.1
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1070
49

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 54
24
Strength to Weight: Axial, points 12
23 to 71
Strength to Weight: Bending, points 20
21 to 45
Thermal Diffusivity, mm2/s 58
13
Thermal Shock Resistance, points 5.1
19 to 59

Alloy Composition

Aluminum (Al), % 86 to 90
0
Carbon (C), % 0
0.55 to 0.65
Chromium (Cr), % 0
0.6 to 0.9
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
97 to 98.2
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0 to 0.1
0.7 to 1.0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 9.0 to 10.5
0 to 0.4
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0