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S20432 Stainless Steel vs. 240.0 Aluminum

S20432 stainless steel belongs to the iron alloys classification, while 240.0 aluminum belongs to the aluminum 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 S20432 stainless steel and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 45
1.0
Fatigue Strength, MPa 210
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 580
240
Tensile Strength: Yield (Proof), MPa 230
200

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Maximum Temperature: Mechanical, °C 900
180
Melting Completion (Liquidus), °C 1410
600
Melting Onset (Solidus), °C 1370
520
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 15
96
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
23
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
65

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.8
3.2
Embodied Carbon, kg CO2/kg material 2.7
8.7
Embodied Energy, MJ/kg 38
150
Embodied Water, L/kg 140
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 140
280
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
43
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 4.0
35
Thermal Shock Resistance, points 13
11

Alloy Composition

Aluminum (Al), % 0
81.7 to 86.9
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 18
0
Copper (Cu), % 2.0 to 3.0
7.0 to 9.0
Iron (Fe), % 66.7 to 74
0 to 0.5
Magnesium (Mg), % 0
5.5 to 6.5
Manganese (Mn), % 3.0 to 5.0
0.3 to 0.7
Nickel (Ni), % 4.0 to 6.0
0.3 to 0.7
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15