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EN AC-43400 Aluminum vs. S66286 Stainless Steel

EN AC-43400 aluminum belongs to the aluminum alloys classification, while S66286 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 EN AC-43400 aluminum and the bottom bar is S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
17 to 40
Fatigue Strength, MPa 110
240 to 410
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 270
620 to 1020
Tensile Strength: Yield (Proof), MPa 160
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 540
300
Maximum Temperature: Mechanical, °C 170
920
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 590
1370
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
15
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
26
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 7.8
6.0
Embodied Energy, MJ/kg 150
87
Embodied Water, L/kg 1070
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6
150 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 180
190 to 1150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
24
Strength to Weight: Axial, points 29
22 to 36
Strength to Weight: Bending, points 36
20 to 28
Thermal Diffusivity, mm2/s 59
4.0
Thermal Shock Resistance, points 12
13 to 22

Alloy Composition

Aluminum (Al), % 86 to 90.8
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
13.5 to 16
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 1.0
49.1 to 59.5
Lead (Pb), % 0 to 0.15
0
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.55
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 0 to 0.15
24 to 27
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 9.0 to 11
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.2
1.9 to 2.4
Vanadium (V), % 0
0.1 to 0.5
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0