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EN AC-43400 Aluminum vs. N08800 Stainless Steel

EN AC-43400 aluminum belongs to the aluminum alloys classification, while N08800 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 N08800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.1
4.5 to 34
Fatigue Strength, MPa 110
150 to 390
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 270
500 to 1000
Tensile Strength: Yield (Proof), MPa 160
190 to 830

Thermal Properties

Latent Heat of Fusion, J/g 540
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 590
1360
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 140
12
Thermal Expansion, µm/m-K 22
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 110
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.6
8.0
Embodied Carbon, kg CO2/kg material 7.8
5.3
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 1070
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6
42 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 180
96 to 1740
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
24
Strength to Weight: Axial, points 29
18 to 35
Strength to Weight: Bending, points 36
18 to 28
Thermal Diffusivity, mm2/s 59
3.0
Thermal Shock Resistance, points 12
13 to 25

Alloy Composition

Aluminum (Al), % 86 to 90.8
0.15 to 0.6
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.1
0 to 0.75
Iron (Fe), % 0 to 1.0
39.5 to 50.7
Lead (Pb), % 0 to 0.15
0
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.55
0 to 1.5
Nickel (Ni), % 0 to 0.15
30 to 35
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 9.0 to 11
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.2
0.15 to 0.6
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0