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2117 Aluminum vs. N08367 Stainless Steel

2117 aluminum belongs to the aluminum alloys classification, while N08367 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 N08367 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
210
Elastic (Young's, Tensile) Modulus, GPa 71
210
Elongation at Break, % 26
34
Fatigue Strength, MPa 95
280
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
80
Shear Strength, MPa 200
490
Tensile Strength: Ultimate (UTS), MPa 300
740
Tensile Strength: Yield (Proof), MPa 170
350

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 220
1100
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 880
460
Thermal Conductivity, W/m-K 150
12
Thermal Expansion, µm/m-K 24
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 10
33
Density, g/cm3 3.0
8.1
Embodied Carbon, kg CO2/kg material 8.2
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1150
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
210
Resilience: Unit (Modulus of Resilience), kJ/m3 190
290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 33
22
Thermal Diffusivity, mm2/s 59
3.2
Thermal Shock Resistance, points 12
17

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.1
20 to 22
Copper (Cu), % 2.2 to 4.5
0 to 0.75
Iron (Fe), % 0 to 0.7
41.4 to 50.3
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 0.8
0 to 1.0
Sulfur (S), % 0
0 to 0.030
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