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EN 1.4659 Stainless Steel vs. 240.0 Aluminum

EN 1.4659 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 EN 1.4659 stainless steel and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Elongation at Break, % 49
1.0
Fatigue Strength, MPa 460
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
27
Tensile Strength: Ultimate (UTS), MPa 900
240
Tensile Strength: Yield (Proof), MPa 480
200

Thermal Properties

Latent Heat of Fusion, J/g 300
380
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1480
600
Melting Onset (Solidus), °C 1430
520
Specific Heat Capacity, J/kg-K 460
860
Thermal Conductivity, W/m-K 12
96
Thermal Expansion, µm/m-K 16
22

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 37
12
Density, g/cm3 8.2
3.2
Embodied Carbon, kg CO2/kg material 6.5
8.7
Embodied Energy, MJ/kg 89
150
Embodied Water, L/kg 220
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 370
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 550
280
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 24
43
Strength to Weight: Axial, points 31
20
Strength to Weight: Bending, points 25
26
Thermal Diffusivity, mm2/s 3.2
35
Thermal Shock Resistance, points 19
11

Alloy Composition

Aluminum (Al), % 0
81.7 to 86.9
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 23 to 25
0
Copper (Cu), % 1.0 to 2.0
7.0 to 9.0
Iron (Fe), % 35.7 to 45.7
0 to 0.5
Magnesium (Mg), % 0
5.5 to 6.5
Manganese (Mn), % 2.0 to 4.0
0.3 to 0.7
Molybdenum (Mo), % 5.5 to 6.5
0
Nickel (Ni), % 21 to 23
0.3 to 0.7
Nitrogen (N), % 0.35 to 0.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.7
0 to 0.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 1.5 to 2.5
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15