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EN 1.4557 Stainless Steel vs. 390.0 Aluminum

EN 1.4557 stainless steel belongs to the iron alloys classification, while 390.0 aluminum belongs to the aluminum alloys. There are 30 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 EN 1.4557 stainless steel and the bottom bar is 390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
120
Elastic (Young's, Tensile) Modulus, GPa 200
75
Elongation at Break, % 40
1.0
Fatigue Strength, MPa 260
76 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
28
Tensile Strength: Ultimate (UTS), MPa 560
280 to 300
Tensile Strength: Yield (Proof), MPa 300
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
640
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 460
880
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
24 to 25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
79 to 83

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.6
7.3
Embodied Energy, MJ/kg 76
130
Embodied Water, L/kg 190
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
2.7 to 2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 210
380 to 470
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 19
28 to 30
Strength to Weight: Bending, points 19
35 to 36
Thermal Diffusivity, mm2/s 4.0
56
Thermal Shock Resistance, points 12
14 to 15

Alloy Composition

Aluminum (Al), % 0
74.5 to 79.6
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
4.0 to 5.0
Iron (Fe), % 49.5 to 56.3
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
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
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
16 to 18
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.2