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2117 Aluminum vs. SAE-AISI H14 Steel

2117 aluminum belongs to the aluminum alloys classification, while SAE-AISI H14 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 H14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 300
710 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Melting Completion (Liquidus), °C 650
1530
Melting Onset (Solidus), °C 550
1490
Specific Heat Capacity, J/kg-K 880
460
Thermal Conductivity, W/m-K 150
35
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
10

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 3.0
8.1
Embodied Carbon, kg CO2/kg material 8.2
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1150
73

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 28
24 to 69
Strength to Weight: Bending, points 33
22 to 44
Thermal Diffusivity, mm2/s 59
9.3
Thermal Shock Resistance, points 12
24 to 68

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
0.35 to 0.45
Chromium (Cr), % 0 to 0.1
4.8 to 5.5
Copper (Cu), % 2.2 to 4.5
0 to 0.25
Iron (Fe), % 0 to 0.7
86.5 to 89.9
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0.2 to 0.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.2 to 0.8
0.8 to 1.2
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
4.0 to 5.3
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0