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5086 Aluminum vs. EN 1.4669 Stainless Steel

5086 aluminum belongs to the aluminum alloys classification, while EN 1.4669 stainless steel belongs to the iron 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 5086 aluminum and the bottom bar is EN 1.4669 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65 to 100
260
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 1.7 to 20
28
Fatigue Strength, MPa 88 to 180
330
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
78
Shear Strength, MPa 160 to 230
500
Tensile Strength: Ultimate (UTS), MPa 270 to 390
780
Tensile Strength: Yield (Proof), MPa 110 to 320
450

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Corrosion, °C 65
440
Maximum Temperature: Mechanical, °C 190
1030
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 590
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.8
2.6
Embodied Energy, MJ/kg 150
38
Embodied Water, L/kg 1180
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.8 to 42
190
Resilience: Unit (Modulus of Resilience), kJ/m3 86 to 770
510
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 28 to 40
28
Strength to Weight: Bending, points 34 to 44
24
Thermal Diffusivity, mm2/s 52
4.0
Thermal Shock Resistance, points 12 to 17
21

Alloy Composition

Aluminum (Al), % 93 to 96.3
0
Carbon (C), % 0
0 to 0.045
Chromium (Cr), % 0.050 to 0.25
21.5 to 24
Copper (Cu), % 0 to 0.1
1.6 to 3.0
Iron (Fe), % 0 to 0.5
65.2 to 74.8
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.2 to 0.7
1.0 to 3.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
1.0 to 3.0
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0