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6018 Aluminum vs. EN 1.4005 Stainless Steel

6018 aluminum belongs to the aluminum alloys classification, while EN 1.4005 stainless steel belongs to the iron 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 6018 aluminum and the bottom bar is EN 1.4005 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.0 to 9.1
13 to 21
Fatigue Strength, MPa 85 to 89
240 to 290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 170 to 180
390 to 450
Tensile Strength: Ultimate (UTS), MPa 290 to 300
630 to 750
Tensile Strength: Yield (Proof), MPa 220 to 230
370 to 500

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 160
760
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 170
30
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1180
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 25
90 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
350 to 650
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 28 to 29
23 to 27
Strength to Weight: Bending, points 34 to 35
21 to 24
Thermal Diffusivity, mm2/s 65
8.1
Thermal Shock Resistance, points 13
23 to 27

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
0
Bismuth (Bi), % 0.4 to 0.7
0
Carbon (C), % 0
0.060 to 0.15
Chromium (Cr), % 0 to 0.1
12 to 14
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
82.4 to 87.8
Lead (Pb), % 0.4 to 1.2
0
Magnesium (Mg), % 0.6 to 1.2
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.2
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0