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EN 1.4005 Stainless Steel vs. 6081 Aluminum

EN 1.4005 stainless steel belongs to the iron alloys classification, while 6081 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 EN 1.4005 stainless steel and the bottom bar is 6081 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 13 to 21
9.0
Fatigue Strength, MPa 240 to 290
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 390 to 450
180
Tensile Strength: Ultimate (UTS), MPa 630 to 750
310
Tensile Strength: Yield (Proof), MPa 370 to 500
270

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 760
160
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
610
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 30
180
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
47
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
160

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.0
8.3
Embodied Energy, MJ/kg 28
150
Embodied Water, L/kg 100
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
27
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 23 to 27
32
Strength to Weight: Bending, points 21 to 24
37
Thermal Diffusivity, mm2/s 8.1
74
Thermal Shock Resistance, points 23 to 27
14

Alloy Composition

Aluminum (Al), % 0
96.3 to 98.6
Carbon (C), % 0.060 to 0.15
0
Chromium (Cr), % 12 to 14
0 to 0.1
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 82.4 to 87.8
0 to 0.5
Magnesium (Mg), % 0
0.6 to 1.0
Manganese (Mn), % 0 to 1.5
0.1 to 0.45
Molybdenum (Mo), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.7 to 1.1
Sulfur (S), % 0.15 to 0.35
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15