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1100 Aluminum vs. S32001 Stainless Steel

1100 aluminum belongs to the aluminum alloys classification, while S32001 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 1100 aluminum and the bottom bar is S32001 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 1.1 to 32
28
Fatigue Strength, MPa 32 to 71
370
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Shear Strength, MPa 54 to 95
450
Tensile Strength: Ultimate (UTS), MPa 86 to 170
690
Tensile Strength: Yield (Proof), MPa 28 to 150
510

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 180
970
Melting Completion (Liquidus), °C 660
1420
Melting Onset (Solidus), °C 640
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 220
15
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 59
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 190
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1190
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 0.76 to 52
180
Resilience: Unit (Modulus of Resilience), kJ/m3 5.7 to 170
660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 8.7 to 17
25
Strength to Weight: Bending, points 16 to 25
23
Thermal Diffusivity, mm2/s 90
4.0
Thermal Shock Resistance, points 3.7 to 7.4
19

Alloy Composition

Aluminum (Al), % 99 to 99.95
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
19.5 to 21.5
Copper (Cu), % 0.050 to 0.2
0 to 1.0
Iron (Fe), % 0 to 1.0
66.6 to 75.5
Manganese (Mn), % 0 to 0.050
4.0 to 6.0
Molybdenum (Mo), % 0
0 to 0.6
Nickel (Ni), % 0
1.0 to 3.0
Nitrogen (N), % 0
0.050 to 0.17
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0