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EN 1.4517 Stainless Steel vs. 308.0 Aluminum

EN 1.4517 stainless steel belongs to the iron alloys classification, while 308.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 1.4517 stainless steel and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 25
2.0
Fatigue Strength, MPa 380
89
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 730
190
Tensile Strength: Yield (Proof), MPa 550
110

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1430
620
Melting Onset (Solidus), °C 1390
540
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 17
140
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
37
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
110

Otherwise Unclassified Properties

Base Metal Price, % relative 20
10
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 3.8
7.7
Embodied Energy, MJ/kg 53
140
Embodied Water, L/kg 180
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 740
83
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 4.6
55
Thermal Shock Resistance, points 20
9.2

Alloy Composition

Aluminum (Al), % 0
85.7 to 91
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 2.8 to 3.5
4.0 to 5.0
Iron (Fe), % 56.7 to 65.1
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
5.0 to 6.0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5