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EN 1.4557 Stainless Steel vs. 364.0 Aluminum

EN 1.4557 stainless steel belongs to the iron alloys classification, while 364.0 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 1.4557 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, % 40
7.5
Fatigue Strength, MPa 260
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 560
300
Tensile Strength: Yield (Proof), MPa 300
160

Thermal Properties

Latent Heat of Fusion, J/g 300
520
Maximum Temperature: Mechanical, °C 1090
190
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
100

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.0
2.6
Embodied Carbon, kg CO2/kg material 5.6
8.0
Embodied Energy, MJ/kg 76
150
Embodied Water, L/kg 190
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
19
Resilience: Unit (Modulus of Resilience), kJ/m3 210
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 19
31
Strength to Weight: Bending, points 19
38
Thermal Diffusivity, mm2/s 4.0
51
Thermal Shock Resistance, points 12
14

Alloy Composition

Aluminum (Al), % 0
87.2 to 92
Beryllium (Be), % 0
0.020 to 0.040
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 19.5 to 20.5
0.25 to 0.5
Copper (Cu), % 0.5 to 1.0
0 to 0.2
Iron (Fe), % 49.5 to 56.3
0 to 1.5
Magnesium (Mg), % 0
0.2 to 0.4
Manganese (Mn), % 0 to 1.2
0 to 0.1
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
0 to 0.15
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.030
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