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EN 1.8824 Steel vs. 7050 Aluminum

EN 1.8824 steel belongs to the iron alloys classification, while 7050 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 EN 1.8824 steel and the bottom bar is 7050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 22
2.2 to 12
Fatigue Strength, MPa 310
130 to 210
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
26
Shear Strength, MPa 370
280 to 330
Tensile Strength: Ultimate (UTS), MPa 580
490 to 570
Tensile Strength: Yield (Proof), MPa 440
390 to 500

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
490
Specific Heat Capacity, J/kg-K 470
860
Thermal Conductivity, W/m-K 49
140
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
100

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
10
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 1.6
8.2
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 48
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
10 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 530
1110 to 1760
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 21
45 to 51
Strength to Weight: Bending, points 20
45 to 50
Thermal Diffusivity, mm2/s 13
54
Thermal Shock Resistance, points 17
21 to 25

Alloy Composition


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Aluminum (Al), % 0.020 to 0.040
87.3 to 92.1
Carbon (C), % 0 to 0.16
0
Chromium (Cr), % 0
0 to 0.040
Copper (Cu), % 0
2.0 to 2.6
Iron (Fe), % 96.6 to 99.98
0 to 0.15
Magnesium (Mg), % 0
1.9 to 2.6
Manganese (Mn), % 0 to 1.7
0 to 0.1
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 0 to 0.5
0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 0.12
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.050
0 to 0.060
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 0
5.7 to 6.7
Zirconium (Zr), % 0
0.080 to 0.15
Residuals, % 0
0 to 0.15