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6018 Aluminum vs. EN 1.4110 Stainless Steel

6018 aluminum belongs to the aluminum alloys classification, while EN 1.4110 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 1.4110 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.0 to 9.1
11 to 14
Fatigue Strength, MPa 85 to 89
250 to 730
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 170 to 180
470 to 1030
Tensile Strength: Ultimate (UTS), MPa 290 to 300
770 to 1720
Tensile Strength: Yield (Proof), MPa 220 to 230
430 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 160
790
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
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
8.0
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.3
Embodied Energy, MJ/kg 150
33
Embodied Water, L/kg 1180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 25
90 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
480 to 4550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 28 to 29
28 to 62
Strength to Weight: Bending, points 34 to 35
24 to 41
Thermal Diffusivity, mm2/s 65
8.1
Thermal Shock Resistance, points 13
27 to 60

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
0
Bismuth (Bi), % 0.4 to 0.7
0
Carbon (C), % 0
0.48 to 0.6
Chromium (Cr), % 0 to 0.1
13 to 15
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
81.4 to 86
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 1.0
Molybdenum (Mo), % 0
0.5 to 0.8
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.2
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0