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EN 1.4308 Stainless Steel vs. 5657 Aluminum

EN 1.4308 stainless steel belongs to the iron alloys classification, while 5657 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 1.4308 stainless steel and the bottom bar is 5657 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
40 to 50
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 34
6.6 to 15
Fatigue Strength, MPa 160
74 to 88
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 510
150 to 200
Tensile Strength: Yield (Proof), MPa 200
140 to 170

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 960
180
Melting Completion (Liquidus), °C 1420
660
Melting Onset (Solidus), °C 1380
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
210
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
54
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
180

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.0
8.4
Embodied Energy, MJ/kg 43
160
Embodied Water, L/kg 150
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
9.7 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 100
140 to 200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 18
15 to 20
Strength to Weight: Bending, points 18
23 to 28
Thermal Diffusivity, mm2/s 4.1
84
Thermal Shock Resistance, points 11
6.7 to 8.6

Alloy Composition


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Aluminum (Al), % 0
98.5 to 99.4
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.1
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 65.9 to 74
0 to 0.1
Magnesium (Mg), % 0
0.6 to 1.0
Manganese (Mn), % 0 to 1.5
0 to 0.030
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.080
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.050