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EN 1.6563 Steel vs. 5251 Aluminum

EN 1.6563 steel belongs to the iron alloys classification, while 5251 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 1.6563 steel and the bottom bar is 5251 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 620 to 1850
180 to 280

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
610
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 45
150
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
120

Otherwise Unclassified Properties

Base Metal Price, % relative 3.6
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.7
8.5
Embodied Energy, MJ/kg 22
150
Embodied Water, L/kg 54
1180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22 to 65
18 to 29
Strength to Weight: Bending, points 21 to 43
26 to 35
Thermal Diffusivity, mm2/s 12
61
Thermal Shock Resistance, points 18 to 54
7.9 to 13

Alloy Composition

Aluminum (Al), % 0
95.5 to 98.2
Carbon (C), % 0.38 to 0.44
0
Chromium (Cr), % 0.7 to 0.9
0 to 0.15
Copper (Cu), % 0 to 0.25
0 to 0.15
Iron (Fe), % 94.9 to 96.5
0 to 0.5
Magnesium (Mg), % 0
1.7 to 2.4
Manganese (Mn), % 0.6 to 0.9
0.1 to 0.5
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0 to 0.4
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15