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7075 Aluminum vs. EN 1.7033 Steel

7075 aluminum belongs to the aluminum alloys classification, while EN 1.7033 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 7075 aluminum and the bottom bar is EN 1.7033 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 240 to 590
500 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 200
420
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 480
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130
45
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 98
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.2
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1120
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 22 to 54
18 to 61
Strength to Weight: Bending, points 28 to 52
18 to 41
Thermal Diffusivity, mm2/s 50
12
Thermal Shock Resistance, points 10 to 25
15 to 50

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0
Carbon (C), % 0
0.3 to 0.37
Chromium (Cr), % 0.18 to 0.28
0.9 to 1.2
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 0 to 0.5
97.1 to 98.2
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0