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2117 Aluminum vs. SAE-AISI 9310 Steel

2117 aluminum belongs to the aluminum alloys classification, while SAE-AISI 9310 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 9310 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
540 to 610
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 26
17 to 19
Fatigue Strength, MPa 95
300 to 390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 200
510 to 570
Tensile Strength: Ultimate (UTS), MPa 300
820 to 910
Tensile Strength: Yield (Proof), MPa 170
450 to 570

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
48
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
4.4
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.2
1.8
Embodied Energy, MJ/kg 150
24
Embodied Water, L/kg 1150
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
120 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 190
540 to 860
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 28
29 to 32
Strength to Weight: Bending, points 33
25 to 27
Thermal Diffusivity, mm2/s 59
13
Thermal Shock Resistance, points 12
24 to 27

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
0.080 to 0.13
Chromium (Cr), % 0 to 0.1
1.0 to 1.4
Copper (Cu), % 2.2 to 4.5
0
Iron (Fe), % 0 to 0.7
93.8 to 95.2
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0.45 to 0.65
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0
3.0 to 3.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0.2 to 0.8
0.2 to 0.35
Sulfur (S), % 0
0 to 0.012
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