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6008 Aluminum vs. EN 1.4640 Stainless Steel

6008 aluminum belongs to the aluminum alloys classification, while EN 1.4640 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 6008 aluminum and the bottom bar is EN 1.4640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 9.1 to 17
51
Fatigue Strength, MPa 55 to 88
230 to 250
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 120 to 170
440 to 460
Tensile Strength: Ultimate (UTS), MPa 200 to 290
620 to 650
Tensile Strength: Yield (Proof), MPa 100 to 220
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 180
930
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 620
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 190
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 160
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.8
Embodied Energy, MJ/kg 160
40
Embodied Water, L/kg 1180
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 28
250 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 76 to 360
150 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 21 to 29
22 to 23
Strength to Weight: Bending, points 28 to 35
21
Thermal Diffusivity, mm2/s 77
4.0
Thermal Shock Resistance, points 9.0 to 13
14 to 15

Alloy Composition

Aluminum (Al), % 96.5 to 99.1
0
Carbon (C), % 0
0.030 to 0.080
Chromium (Cr), % 0 to 0.3
18 to 19
Copper (Cu), % 0 to 0.3
1.3 to 2.0
Iron (Fe), % 0 to 0.35
67.4 to 73.6
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.3
1.5 to 4.0
Nickel (Ni), % 0
5.5 to 6.9
Nitrogen (N), % 0
0.030 to 0.11
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 0.9
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0.050 to 0.2
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0