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EN 1.4905 Stainless Steel vs. 308.0 Aluminum

EN 1.4905 stainless steel belongs to the iron alloys classification, while 308.0 aluminum belongs to the aluminum alloys. There are 30 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 1.4905 stainless steel and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 19
2.0
Fatigue Strength, MPa 330
89
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Shear Strength, MPa 460
150
Tensile Strength: Ultimate (UTS), MPa 740
190
Tensile Strength: Yield (Proof), MPa 510
110

Thermal Properties

Latent Heat of Fusion, J/g 270
470
Maximum Temperature: Mechanical, °C 660
170
Melting Completion (Liquidus), °C 1480
620
Melting Onset (Solidus), °C 1440
540
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 26
140
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
37
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 7.9
2.9
Embodied Carbon, kg CO2/kg material 2.8
7.7
Embodied Energy, MJ/kg 40
140
Embodied Water, L/kg 90
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 680
83
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 7.0
55
Thermal Shock Resistance, points 25
9.2

Alloy Composition

Aluminum (Al), % 0 to 0.040
85.7 to 91
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0
Chromium (Cr), % 8.5 to 9.5
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 86.2 to 88.8
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.3 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0.1 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.1 to 0.5
5.0 to 6.0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5