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2117 Aluminum vs. SAE-AISI D5 Steel

2117 aluminum belongs to the aluminum alloys classification, while SAE-AISI D5 steel belongs to the iron 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 2117 aluminum and the bottom bar is SAE-AISI D5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 26
5.4 to 14
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
75
Shear Strength, MPa 200
470 to 1180
Tensile Strength: Ultimate (UTS), MPa 300
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Melting Completion (Liquidus), °C 650
1430
Melting Onset (Solidus), °C 550
1390
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 150
27
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
4.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.2
3.5
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1150
120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 28
28 to 73
Strength to Weight: Bending, points 33
24 to 46
Thermal Diffusivity, mm2/s 59
7.4
Thermal Shock Resistance, points 12
26 to 67

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
1.4 to 1.6
Chromium (Cr), % 0 to 0.1
11 to 13
Cobalt (Co), % 0
2.5 to 3.5
Copper (Cu), % 2.2 to 4.5
0 to 0.25
Iron (Fe), % 0 to 0.7
77.9 to 84.4
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.2 to 0.8
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Vanadium (V), % 0
0 to 1.0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0