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EN 1.4005 Stainless Steel vs. 6066 Aluminum

EN 1.4005 stainless steel belongs to the iron alloys classification, while 6066 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 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 13 to 21
7.8 to 17
Fatigue Strength, MPa 240 to 290
94 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 390 to 450
95 to 240
Tensile Strength: Ultimate (UTS), MPa 630 to 750
160 to 400
Tensile Strength: Yield (Proof), MPa 370 to 500
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 760
170
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 30
150
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
40
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
130

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.7
2.8
Embodied Carbon, kg CO2/kg material 2.0
8.3
Embodied Energy, MJ/kg 28
150
Embodied Water, L/kg 100
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
61 to 920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 23 to 27
16 to 39
Strength to Weight: Bending, points 21 to 24
23 to 43
Thermal Diffusivity, mm2/s 8.1
61
Thermal Shock Resistance, points 23 to 27
6.9 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 97
Carbon (C), % 0.060 to 0.15
0
Chromium (Cr), % 12 to 14
0 to 0.4
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 82.4 to 87.8
0 to 0.5
Magnesium (Mg), % 0
0.8 to 1.4
Manganese (Mn), % 0 to 1.5
0.6 to 1.1
Molybdenum (Mo), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.9 to 1.8
Sulfur (S), % 0.15 to 0.35
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants