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240.0 Aluminum vs. EN 1.4865 Stainless Steel

240.0 aluminum belongs to the aluminum alloys classification, while EN 1.4865 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 1.4865 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.0
6.8
Fatigue Strength, MPa 140
120
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 240
470
Tensile Strength: Yield (Proof), MPa 200
250

Thermal Properties

Latent Heat of Fusion, J/g 380
320
Maximum Temperature: Mechanical, °C 180
1020
Melting Completion (Liquidus), °C 600
1380
Melting Onset (Solidus), °C 520
1330
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 96
12
Thermal Expansion, µm/m-K 22
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 65
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 3.2
8.0
Embodied Carbon, kg CO2/kg material 8.7
5.8
Embodied Energy, MJ/kg 150
81
Embodied Water, L/kg 1100
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2
27
Resilience: Unit (Modulus of Resilience), kJ/m3 280
160
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
24
Strength to Weight: Axial, points 20
16
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 35
3.1
Thermal Shock Resistance, points 11
11

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 7.0 to 9.0
0
Iron (Fe), % 0 to 0.5
34.4 to 44.7
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.3 to 0.7
36 to 39
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
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