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EN 1.0503 Steel vs. 2018 Aluminum

EN 1.0503 steel belongs to the iron alloys classification, while 2018 aluminum belongs to the aluminum 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 EN 1.0503 steel and the bottom bar is 2018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
120
Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 16
9.6
Fatigue Strength, MPa 210
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Shear Strength, MPa 380
270
Tensile Strength: Ultimate (UTS), MPa 630
420
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 400
220
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
510
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 48
150
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
11
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 1.4
8.1
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 47
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
37
Resilience: Unit (Modulus of Resilience), kJ/m3 260
670
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 22
38
Strength to Weight: Bending, points 21
41
Thermal Diffusivity, mm2/s 13
57
Thermal Shock Resistance, points 20
19

Alloy Composition


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Aluminum (Al), % 0
89.7 to 94.4
Carbon (C), % 0.42 to 0.5
0
Chromium (Cr), % 0 to 0.4
0 to 0.1
Copper (Cu), % 0
3.5 to 4.5
Iron (Fe), % 97.3 to 99.08
0 to 1.0
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 0.5 to 0.8
0 to 0.2
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
1.7 to 2.3
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.4
0 to 0.9
Sulfur (S), % 0 to 0.045
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15