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4007 Aluminum vs. EN 1.8821 Steel

4007 aluminum belongs to the aluminum alloys classification, while EN 1.8821 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 4007 aluminum and the bottom bar is EN 1.8821 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 32 to 44
160
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 5.1 to 23
25
Fatigue Strength, MPa 46 to 88
280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 80 to 90
340
Tensile Strength: Ultimate (UTS), MPa 130 to 160
530
Tensile Strength: Yield (Proof), MPa 50 to 120
390

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
49
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.3
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.6
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1160
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.4 to 23
120
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 110
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 12 to 15
19
Strength to Weight: Bending, points 20 to 23
19
Thermal Diffusivity, mm2/s 67
13
Thermal Shock Resistance, points 5.5 to 6.7
16

Alloy Composition

Aluminum (Al), % 94.1 to 97.6
0.020 to 0.030
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0.050 to 0.25
0
Cobalt (Co), % 0 to 0.050
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0.4 to 1.0
96.8 to 99.98
Magnesium (Mg), % 0 to 0.2
0
Manganese (Mn), % 0.8 to 1.5
0 to 1.6
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0.15 to 0.7
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 1.0 to 1.7
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0 to 0.050
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0