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EN AC-45000 Aluminum vs. S20161 Stainless Steel

EN AC-45000 aluminum belongs to the aluminum alloys classification, while S20161 stainless steel belongs to the iron alloys. There are 30 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-45000 aluminum and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77
250
Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 1.1
46
Fatigue Strength, MPa 75
360
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 180
980
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 470
330
Maximum Temperature: Mechanical, °C 180
870
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 520
1330
Specific Heat Capacity, J/kg-K 870
490
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.0
7.5
Embodied Carbon, kg CO2/kg material 7.7
2.7
Embodied Energy, MJ/kg 140
39
Embodied Water, L/kg 1070
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
360
Resilience: Unit (Modulus of Resilience), kJ/m3 80
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
26
Strength to Weight: Axial, points 17
36
Strength to Weight: Bending, points 24
29
Thermal Diffusivity, mm2/s 47
4.0
Thermal Shock Resistance, points 8.0
22

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.15
15 to 18
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
65.6 to 73.9
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
4.0 to 6.0
Nickel (Ni), % 0 to 0.45
4.0 to 6.0
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 5.0 to 7.0
3.0 to 4.0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0