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EN 1.5918 Steel vs. 6063 Aluminum

EN 1.5918 steel belongs to the iron alloys classification, while 6063 aluminum belongs to the aluminum alloys. There are 25 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 1.5918 steel and the bottom bar is 6063 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 190
25 to 95
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 530 to 1390
110 to 300

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 440
160
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
620
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 43
190 to 220
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
49 to 58
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
160 to 190

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.6
8.3
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 56
1190

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 19 to 49
11 to 31
Strength to Weight: Bending, points 18 to 35
18 to 37
Thermal Diffusivity, mm2/s 12
79 to 89
Thermal Shock Resistance, points 15 to 41
4.8 to 13

Alloy Composition

Aluminum (Al), % 0
97.5 to 99.4
Carbon (C), % 0.14 to 0.2
0
Chromium (Cr), % 1.4 to 1.7
0 to 0.1
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 94.9 to 96.6
0 to 0.35
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 0.5 to 0.9
0 to 0.1
Nickel (Ni), % 1.4 to 1.7
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0.2 to 0.6
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15