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EN 1.0451 Steel vs. 7075 Aluminum

EN 1.0451 steel belongs to the iron alloys classification, while 7075 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.0451 steel and the bottom bar is 7075 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 27
1.8 to 12
Fatigue Strength, MPa 180
110 to 190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
26
Shear Strength, MPa 270
150 to 340
Tensile Strength: Ultimate (UTS), MPa 420
240 to 590
Tensile Strength: Yield (Proof), MPa 240
120 to 510

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 400
200
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
480
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 49
130
Thermal Expansion, µm/m-K 12
23

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
10
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 1.5
8.3
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 48
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98
7.8 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 150
110 to 1870
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 15
22 to 54
Strength to Weight: Bending, points 16
28 to 52
Thermal Diffusivity, mm2/s 13
50
Thermal Shock Resistance, points 13
10 to 25

Alloy Composition


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Aluminum (Al), % 0.020 to 0.060
86.9 to 91.4
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 0 to 0.3
0.18 to 0.28
Copper (Cu), % 0 to 0.3
1.2 to 2.0
Iron (Fe), % 97.2 to 99.58
0 to 0.5
Magnesium (Mg), % 0
2.1 to 2.9
Manganese (Mn), % 0.4 to 1.2
0 to 0.3
Molybdenum (Mo), % 0 to 0.080
0
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.040
0 to 0.2
Vanadium (V), % 0 to 0.020
0
Zinc (Zn), % 0
5.1 to 6.1
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15