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EN 1.4308 Stainless Steel vs. B390.0 Aluminum

EN 1.4308 stainless steel belongs to the iron alloys classification, while B390.0 aluminum belongs to the aluminum alloys. There are 29 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 B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
76
Elongation at Break, % 34
0.88
Fatigue Strength, MPa 160
170
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
29
Tensile Strength: Ultimate (UTS), MPa 510
320
Tensile Strength: Yield (Proof), MPa 200
250

Thermal Properties

Latent Heat of Fusion, J/g 290
640
Maximum Temperature: Mechanical, °C 960
170
Melting Completion (Liquidus), °C 1420
580
Melting Onset (Solidus), °C 1380
580
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
88

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 3.0
7.3
Embodied Energy, MJ/kg 43
130
Embodied Water, L/kg 150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 100
410
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
38
Thermal Diffusivity, mm2/s 4.1
55
Thermal Shock Resistance, points 11
15

Alloy Composition


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Aluminum (Al), % 0
72.7 to 79.6
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 65.9 to 74
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0 to 1.5
0 to 0.5
Nickel (Ni), % 8.0 to 11
0 to 0.1
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
16 to 18
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.2