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EN 1.4618 Stainless Steel vs. 364.0 Aluminum

EN 1.4618 stainless steel belongs to the iron alloys classification, while 364.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4618 stainless steel and the bottom bar is 364.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 51
7.5
Fatigue Strength, MPa 240 to 250
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Shear Strength, MPa 480 to 500
200
Tensile Strength: Ultimate (UTS), MPa 680 to 700
300
Tensile Strength: Yield (Proof), MPa 250 to 260
160

Thermal Properties

Latent Heat of Fusion, J/g 280
520
Maximum Temperature: Mechanical, °C 900
190
Melting Completion (Liquidus), °C 1400
600
Melting Onset (Solidus), °C 1360
560
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 16
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
100

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.7
8.0
Embodied Energy, MJ/kg 39
150
Embodied Water, L/kg 150
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
19
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 24 to 25
31
Strength to Weight: Bending, points 22 to 23
38
Thermal Diffusivity, mm2/s 4.0
51
Thermal Shock Resistance, points 15 to 16
14

Alloy Composition

Aluminum (Al), % 0
87.2 to 92
Beryllium (Be), % 0
0.020 to 0.040
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 16.5 to 18.5
0.25 to 0.5
Copper (Cu), % 1.0 to 2.5
0 to 0.2
Iron (Fe), % 62.7 to 72.5
0 to 1.5
Magnesium (Mg), % 0
0.2 to 0.4
Manganese (Mn), % 5.5 to 9.5
0 to 0.1
Nickel (Ni), % 4.5 to 5.5
0 to 0.15
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0
Silicon (Si), % 0 to 1.0
7.5 to 9.5
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15