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240.0 Aluminum vs. S21603 Stainless Steel

240.0 aluminum belongs to the aluminum alloys classification, while S21603 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, 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 240.0 aluminum and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.0
45
Fatigue Strength, MPa 140
360
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 240
690
Tensile Strength: Yield (Proof), MPa 200
390

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Maximum Temperature: Mechanical, °C 180
990
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 520
1380
Specific Heat Capacity, J/kg-K 860
480
Thermal Expansion, µm/m-K 22
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 3.2
7.7
Embodied Carbon, kg CO2/kg material 8.7
3.6
Embodied Energy, MJ/kg 150
50
Embodied Water, L/kg 1100
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2
270
Resilience: Unit (Modulus of Resilience), kJ/m3 280
380
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
25
Strength to Weight: Axial, points 20
25
Strength to Weight: Bending, points 26
22
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 22
Copper (Cu), % 7.0 to 9.0
0
Iron (Fe), % 0 to 0.5
57.6 to 67.8
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0.3 to 0.7
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0