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4007 Aluminum vs. EN 1.0070 Steel

4007 aluminum belongs to the aluminum alloys classification, while EN 1.0070 steel belongs to the iron alloys. 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 1.0070 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 32 to 44
210
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 5.1 to 23
9.1
Fatigue Strength, MPa 46 to 88
210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 80 to 90
440
Tensile Strength: Ultimate (UTS), MPa 130 to 160
740
Tensile Strength: Yield (Proof), MPa 50 to 120
350

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 650
1470
Melting Onset (Solidus), °C 590
1430
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
53
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
7.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.7
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.1
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1160
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.4 to 23
56
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 110
320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 12 to 15
26
Strength to Weight: Bending, points 20 to 23
23
Thermal Diffusivity, mm2/s 67
14
Thermal Shock Resistance, points 5.5 to 6.7
23

Alloy Composition

Aluminum (Al), % 94.1 to 97.6
0
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
99.876 to 100
Magnesium (Mg), % 0 to 0.2
0
Manganese (Mn), % 0.8 to 1.5
0
Nickel (Ni), % 0.15 to 0.7
0
Nitrogen (N), % 0
0 to 0.014
Phosphorus (P), % 0
0 to 0.055
Silicon (Si), % 1.0 to 1.7
0
Sulfur (S), % 0
0 to 0.055
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0