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6018 Aluminum vs. EN 1.4594 Stainless Steel

6018 aluminum belongs to the aluminum alloys classification, while EN 1.4594 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 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 9.0 to 9.1
11 to 17
Fatigue Strength, MPa 85 to 89
490 to 620
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 170 to 180
620 to 700
Tensile Strength: Ultimate (UTS), MPa 290 to 300
1020 to 1170
Tensile Strength: Yield (Proof), MPa 220 to 230
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 160
820
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
16
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 2.9
7.9
Embodied Carbon, kg CO2/kg material 8.2
3.2
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1180
130

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
1660 to 3320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 28 to 29
36 to 41
Strength to Weight: Bending, points 34 to 35
29 to 31
Thermal Diffusivity, mm2/s 65
4.4
Thermal Shock Resistance, points 13
34 to 39

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
0
Bismuth (Bi), % 0.4 to 0.7
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0 to 0.1
13 to 15
Copper (Cu), % 0.15 to 0.4
1.2 to 2.0
Iron (Fe), % 0 to 0.7
72.6 to 79.5
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
1.2 to 2.0
Nickel (Ni), % 0
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.2
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0