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240.0 Aluminum vs. EN 1.4521 Stainless Steel

240.0 aluminum belongs to the aluminum alloys classification, while EN 1.4521 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 EN 1.4521 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.0
23
Fatigue Strength, MPa 140
230
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 240
520
Tensile Strength: Yield (Proof), MPa 200
340

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Maximum Temperature: Mechanical, °C 180
930
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 96
23
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 65
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 3.2
7.7
Embodied Carbon, kg CO2/kg material 8.7
2.8
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1100
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2
100
Resilience: Unit (Modulus of Resilience), kJ/m3 280
280
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
25
Strength to Weight: Axial, points 20
19
Strength to Weight: Bending, points 26
19
Thermal Diffusivity, mm2/s 35
6.2
Thermal Shock Resistance, points 11
18

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
17 to 20
Copper (Cu), % 7.0 to 9.0
0
Iron (Fe), % 0 to 0.5
74.6 to 81.1
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 0.3 to 0.7
0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0.15 to 0.8
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0