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2117 Aluminum vs. EN 1.7366 Steel

2117 aluminum belongs to the aluminum alloys classification, while EN 1.7366 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1.7366 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
140 to 210
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 26
17 to 19
Fatigue Strength, MPa 95
160 to 320
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
74
Shear Strength, MPa 200
290 to 440
Tensile Strength: Ultimate (UTS), MPa 300
460 to 710
Tensile Strength: Yield (Proof), MPa 170
230 to 480

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Maximum Temperature: Mechanical, °C 220
510
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
40
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
4.3
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1150
69

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
74 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
140 to 600
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 28
16 to 25
Strength to Weight: Bending, points 33
17 to 23
Thermal Diffusivity, mm2/s 59
11
Thermal Shock Resistance, points 12
13 to 20

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
0 to 0.18
Chromium (Cr), % 0 to 0.1
4.0 to 6.0
Copper (Cu), % 2.2 to 4.5
0
Iron (Fe), % 0 to 0.7
91.9 to 95.3
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0.3 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.65
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.2 to 0.8
0 to 0.4
Sulfur (S), % 0
0 to 0.015
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