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5050 Aluminum vs. N08366 Stainless Steel

5050 aluminum belongs to the aluminum alloys classification, while N08366 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 5050 aluminum and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 36 to 68
180
Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 1.7 to 22
34
Fatigue Strength, MPa 45 to 100
190
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
80
Shear Strength, MPa 91 to 140
390
Tensile Strength: Ultimate (UTS), MPa 140 to 250
590
Tensile Strength: Yield (Proof), MPa 50 to 210
240

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 630
1410
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 190
13
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 170
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
33
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.4
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1190
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1 to 24
160
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 330
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 15 to 26
20
Strength to Weight: Bending, points 22 to 33
19
Thermal Diffusivity, mm2/s 79
3.4
Thermal Shock Resistance, points 6.3 to 11
13

Alloy Composition

Aluminum (Al), % 96.3 to 98.9
0
Carbon (C), % 0
0 to 0.035
Chromium (Cr), % 0 to 0.1
20 to 22
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.7
42.4 to 50.5
Magnesium (Mg), % 1.1 to 1.8
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
23.5 to 25.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0