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6018 Aluminum vs. EN 1.4305 Stainless Steel

6018 aluminum belongs to the aluminum alloys classification, while EN 1.4305 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 9.0 to 9.1
14 to 40
Fatigue Strength, MPa 85 to 89
190 to 330
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 170 to 180
420 to 550
Tensile Strength: Ultimate (UTS), MPa 290 to 300
610 to 900
Tensile Strength: Yield (Proof), MPa 220 to 230
220 to 570

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 160
930
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 170
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.0
Embodied Energy, MJ/kg 150
42
Embodied Water, L/kg 1180
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 25
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
120 to 830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 28 to 29
22 to 32
Strength to Weight: Bending, points 34 to 35
20 to 27
Thermal Diffusivity, mm2/s 65
4.0
Thermal Shock Resistance, points 13
14 to 20

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
0
Bismuth (Bi), % 0.4 to 0.7
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
17 to 19
Copper (Cu), % 0.15 to 0.4
0 to 1.0
Iron (Fe), % 0 to 0.7
66.4 to 74.9
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 2.0
Nickel (Ni), % 0
8.0 to 10
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
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

Comparable Variants