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AISI 329 Stainless Steel vs. 5086 Aluminum

AISI 329 stainless steel belongs to the iron alloys classification, while 5086 aluminum belongs to the aluminum alloys. There are 32 material properties with values for both materials. Properties with values for just one material (3, 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 AISI 329 stainless steel and the bottom bar is 5086 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
65 to 100
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 17
1.7 to 20
Fatigue Strength, MPa 330
88 to 180
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
26
Shear Strength, MPa 440
160 to 230
Tensile Strength: Ultimate (UTS), MPa 710
270 to 390
Tensile Strength: Yield (Proof), MPa 540
110 to 320

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Corrosion, °C 450
65
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1390
590
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
130
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
31
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
100

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 3.1
8.8
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 170
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
5.8 to 42
Resilience: Unit (Modulus of Resilience), kJ/m3 730
86 to 770
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 25
28 to 40
Strength to Weight: Bending, points 23
34 to 44
Thermal Diffusivity, mm2/s 4.3
52
Thermal Shock Resistance, points 19
12 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 96.3
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 23 to 28
0.050 to 0.25
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 63.1 to 74
0 to 0.5
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 0 to 1.0
0.2 to 0.7
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 2.0 to 5.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15