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2117 Aluminum vs. EN 1.5918 Steel

2117 aluminum belongs to the aluminum alloys classification, while EN 1.5918 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 2117 aluminum and the bottom bar is EN 1.5918 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
160 to 190
Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 300
530 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 220
440
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
43
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
3.4
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.2
1.6
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1150
56

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 28
19 to 49
Strength to Weight: Bending, points 33
18 to 35
Thermal Diffusivity, mm2/s 59
12
Thermal Shock Resistance, points 12
15 to 41

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
0.14 to 0.2
Chromium (Cr), % 0 to 0.1
1.4 to 1.7
Copper (Cu), % 2.2 to 4.5
0 to 0.25
Iron (Fe), % 0 to 0.7
94.9 to 96.6
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0.5 to 0.9
Nickel (Ni), % 0
1.4 to 1.7
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.2 to 0.8
0 to 0.3
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0