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EN AC-42000 Aluminum vs. N08904 Stainless Steel

EN AC-42000 aluminum belongs to the aluminum alloys classification, while N08904 stainless steel belongs to the iron alloys. There are 30 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-42000 aluminum and the bottom bar is N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 59 to 91
170
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 2.4
38
Fatigue Strength, MPa 67 to 76
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Tensile Strength: Ultimate (UTS), MPa 170 to 270
540
Tensile Strength: Yield (Proof), MPa 95 to 230
240

Thermal Properties

Latent Heat of Fusion, J/g 500
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 600
1390
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
12
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
32
Density, g/cm3 2.6
8.1
Embodied Carbon, kg CO2/kg material 8.0
5.8
Embodied Energy, MJ/kg 150
79
Embodied Water, L/kg 1110
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8 to 5.7
170
Resilience: Unit (Modulus of Resilience), kJ/m3 64 to 370
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 18 to 28
19
Strength to Weight: Bending, points 26 to 35
18
Thermal Diffusivity, mm2/s 66
3.1
Thermal Shock Resistance, points 7.9 to 12
12

Alloy Composition

Aluminum (Al), % 89.9 to 93.3
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.2
1.0 to 2.0
Iron (Fe), % 0 to 0.55
38.8 to 53
Lead (Pb), % 0 to 0.15
0
Magnesium (Mg), % 0.2 to 0.65
0
Manganese (Mn), % 0 to 0.35
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0 to 0.15
23 to 28
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 6.5 to 7.5
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0