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EN 1.4008 Stainless Steel vs. 6066 Aluminum

EN 1.4008 stainless steel belongs to the iron alloys classification, while 6066 aluminum belongs to the aluminum alloys. There are 29 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 EN 1.4008 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, % 17
7.8 to 17
Fatigue Strength, MPa 300
94 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 670
160 to 400
Tensile Strength: Yield (Proof), MPa 500
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 760
170
Melting Completion (Liquidus), °C 1450
650
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 25
150
Thermal Expansion, µm/m-K 11
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 8.0
9.5
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 2.1
8.3
Embodied Energy, MJ/kg 30
150
Embodied Water, L/kg 100
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 630
61 to 920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 24
16 to 39
Strength to Weight: Bending, points 22
23 to 43
Thermal Diffusivity, mm2/s 6.7
61
Thermal Shock Resistance, points 23
6.9 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 97
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 12 to 13.5
0 to 0.4
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 81.8 to 86.8
0 to 0.5
Magnesium (Mg), % 0
0.8 to 1.4
Manganese (Mn), % 0 to 1.0
0.6 to 1.1
Molybdenum (Mo), % 0.2 to 0.5
0
Nickel (Ni), % 1.0 to 2.0
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0.9 to 1.8
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15