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A201.0 Aluminum vs. S20161 Stainless Steel

A201.0 aluminum belongs to the aluminum alloys classification, while S20161 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 A201.0 aluminum and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.7
46
Fatigue Strength, MPa 97
360
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 480
980
Tensile Strength: Yield (Proof), MPa 420
390

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 650
1380
Melting Onset (Solidus), °C 570
1330
Specific Heat Capacity, J/kg-K 880
490
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.0
7.5
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
360
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
26
Strength to Weight: Axial, points 44
36
Strength to Weight: Bending, points 45
29
Thermal Diffusivity, mm2/s 46
4.0
Thermal Shock Resistance, points 21
22

Alloy Composition

Aluminum (Al), % 93.7 to 95.5
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
15 to 18
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 0.1
65.6 to 73.9
Magnesium (Mg), % 0.15 to 0.35
0
Manganese (Mn), % 0.2 to 0.4
4.0 to 6.0
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
3.0 to 4.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0.15 to 0.35
0
Residuals, % 0 to 0.1
0