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EN AC-44400 Aluminum vs. N08020 Stainless Steel

EN AC-44400 aluminum belongs to the aluminum alloys classification, while N08020 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-44400 aluminum and the bottom bar is N08020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 4.1
15 to 34
Fatigue Strength, MPa 79
210 to 240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 210
610 to 620
Tensile Strength: Yield (Proof), MPa 110
270 to 420

Thermal Properties

Latent Heat of Fusion, J/g 540
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 590
1360
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 140
12
Thermal Expansion, µm/m-K 22
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.6
8.2
Embodied Carbon, kg CO2/kg material 7.8
6.6
Embodied Energy, MJ/kg 150
92
Embodied Water, L/kg 1080
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.3
83 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 85
180 to 440
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 54
24
Strength to Weight: Axial, points 23
21
Strength to Weight: Bending, points 31
20
Thermal Diffusivity, mm2/s 60
3.2
Thermal Shock Resistance, points 9.8
15

Alloy Composition

Aluminum (Al), % 87.1 to 92
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.1
3.0 to 4.0
Iron (Fe), % 0 to 0.65
29.9 to 44
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.050
32 to 38
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 8.0 to 11
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0