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4004 Aluminum vs. EN 1.7366 Steel

4004 aluminum belongs to the aluminum alloys classification, while EN 1.7366 steel belongs to the iron alloys. There are 30 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 4004 aluminum and the bottom bar is EN 1.7366 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 2.4
17 to 19
Fatigue Strength, MPa 42
160 to 320
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
74
Shear Strength, MPa 63
290 to 440
Tensile Strength: Ultimate (UTS), MPa 110
460 to 710
Tensile Strength: Yield (Proof), MPa 60
230 to 480

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
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.3
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1070
69

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
74 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 25
140 to 600
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 12
16 to 25
Strength to Weight: Bending, points 20
17 to 23
Thermal Diffusivity, mm2/s 58
11
Thermal Shock Resistance, points 5.1
13 to 20

Alloy Composition

Aluminum (Al), % 86 to 90
0
Carbon (C), % 0
0 to 0.18
Chromium (Cr), % 0
4.0 to 6.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
91.9 to 95.3
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0 to 0.1
0.3 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 0.4
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0