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4004 Aluminum vs. EN 1.7365 Steel

4004 aluminum belongs to the aluminum alloys classification, while EN 1.7365 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 1.7365 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 2.4
18
Fatigue Strength, MPa 42
320
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
74
Tensile Strength: Ultimate (UTS), MPa 110
700
Tensile Strength: Yield (Proof), MPa 60
470

Thermal Properties

Latent Heat of Fusion, J/g 540
260
Maximum Temperature: Mechanical, °C 160
510
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 130
40
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.4
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.8
Embodied Energy, MJ/kg 150
24
Embodied Water, L/kg 1070
70

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
110
Resilience: Unit (Modulus of Resilience), kJ/m3 25
580
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 12
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 58
11
Thermal Shock Resistance, points 5.1
20

Alloy Composition

Aluminum (Al), % 86 to 90
0
Carbon (C), % 0
0.12 to 0.19
Chromium (Cr), % 0
4.0 to 6.0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 0 to 0.8
91.2 to 94.9
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0 to 0.1
0.5 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.65
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 9.0 to 10.5
0 to 0.8
Sulfur (S), % 0
0 to 0.025
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0